The+basics+of+DDC

Here are the official classes of the Dewey Decimal System from the publisher, OCLC Online Computer Library Center, Inc.:

The Ten Main Classes **000** Computer science, information & general works **100** Philosophy & psychology **200** Religion **300** Social sciences **400** Language **500** Science **600** Technology **700** Arts & recreation **800** Literature **900** History & geography

Second Summary
The Hundred Divisions 010 Bibliographies 020 Library & information sciences <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">030 Encyclopedias & books of facts <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">040 [Unassigned] <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">050 Magazines, journals & serials <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">060 Associations, organizations & museums <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">070 News media, journalism & publishing <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">080 Quotations <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">090 Manuscripts & rare books <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">100 Philosophy <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">110 Metaphysics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">120 Epistemology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">130 Parapsychology & occultism <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">140 Philosophical schools of thought <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">150 Psychology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">160 Logic <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">170 Ethics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">180 Ancient, medieval & eastern philosophy <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">190 Modern western philosophy <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">200 Religion <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">210 Philosophy & theory of religion <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">220 The Bible <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">230 Christianity & Christian theology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">240 Christian practice & observance <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">250 Christian pastoral practice & religious orders <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">260 Christian organization, social work & worship <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">270 History of Christianity <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">280 Christian denominations <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">290 Other religions <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">300 Social sciences, sociology & anthropology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">310 Statistics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">320 Political science <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">330 Economics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">340 Law <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">350 Public administration & military science <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">360 Social problems & social services <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">370 Education <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">380 Commerce, communications & transportation <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">390 Customs, etiquette & folklore <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">400 Language <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">410 Linguistics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">420 English & Old English languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">430 German & related languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">440 French & related languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">450 Italian, Romanian & related languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">460 Spanish & Portuguese languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">470 Latin & Italic languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">480 Classical & modern Greek languages <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">490 Other languages || <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">500 Science <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">510 Mathematics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">520 Astronomy <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">530 Physics <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">540 Chemistry <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">550 Earth sciences & geology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">560 Fossils & prehistoric life <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">570 Life sciences; biology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">580 Plants (Botany) <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">590 Animals (Zoology) <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">600 Technology <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">610 Medicine & health <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">620 Engineering <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">630 Agriculture <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">640 Home & family management <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">650 Management & public relations <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">660 Chemical engineering <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">670 Manufacturing <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">680 Manufacture for specific uses <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">690 Building & construction <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">700 Arts <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">710 Landscaping & area planning <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">720 Architecture <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">730 Sculpture, ceramics & metalwork <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">740 Drawing & decorative arts <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">750 Painting <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">760 Graphic arts <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">770 Photography & computer art <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">780 Music <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">790 Sports, games & entertainment <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">800 Literature, rhetoric & criticism <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">810 American literature in English <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">820 English & Old English literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">830 German & related literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">840 French & related literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">850 Italian, Romanian & related literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">860 Spanish & Portuguese literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">870 Latin & Italic literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">880 Classical & modern Greek literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">890 Other literatures <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">900 History <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">910 Geography & travel <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">920 Biography & genealogy <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">930 History of ancient world (to ca. 499) <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">940 History of Europe <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">950 History of Asia <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">960 History of Africa <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">970 History of North America <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">980 History of South America <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">990 History of other areas ||
 * <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif; font-size: 120%;">000 Computer science, knowledge & systems

<span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">Reference: OCLC (2014), Dewey decimal classification summaries, retrieved 27/2/14 from, <span style="font-family: 'Trebuchet MS',Helvetica,sans-serif;">[|http://www.oclc.org/dewey/resources/summaries.en.html#ten]