More on Dewey Decimal System
The DDC attempts to organize all knowledge into ten main classes. The ten main classes are then further subdivided. Each main class has ten divisions, and each division has ten sections. Hence the system can be summarized in 10 main classes, 100 divisions and 1000 sections. DDC's advantage in choosing decimals for its categories allows it to be both purely numerical and infinitely hierarchical.
Except for general works and fiction, works are classified principally by subject, with extensions for subject relationships, place, time or type of material, producing classification numbers of not less than three digits
When two books have the same subject, and therefore the same classification number, the second line of the call number, which usually has the first letter or first several letters of the author's last name (or the title if there is no identifiable author), is placed in alphabetical order.
It is a common misconception that all books in the DDC are non-fiction. The DDC has a number for all books, including those that generally become their own section of fiction. If DDC rules are strictly followed, American fiction is classified in 813. Most libraries create a separate fiction section to allow shelving fiction in a more generalised fashion than Dewey provides for, or to avoid the space that would be taken up in the 800s.
The Divisions:
|
Dewey Decimal System
|
|
000
|
Generalities
|
|
010
|
Bibliography
|
|
020
|
Library & information science
|
|
030
|
General encyclopedias
|
|
040
|
Not used
|
|
050
|
General serial publications
|
|
060
|
Organizations
|
|
070
|
Journalism, publishing, media
|
|
080
|
General collections
|
|
090
|
Manuscripts & rare books
|
|
100
|
Philosophy & Pscyhology
|
|
110
|
Metaphysics
|
|
120
|
Epistemology, causation, humankind
|
|
130
|
Paranormal phenomenon
|
|
140
|
Specific philosophical schools
|
|
150
|
Psychology
|
|
160
|
Logic
|
|
170
|
Ethics
|
|
180
|
Ancient, medieval, Oriental philosophy
|
|
190
|
Modern western philosophy
|
|
200
|
Religion
|
|
210
|
Philosophy & theory of religion
|
|
220
|
Bible
|
|
230
|
Christianity
|
|
240
|
Christian moral & devotional theology
|
|
250
|
Christian orders & local church
|
|
260
|
Social & ecclesiastical theology
|
|
270
|
History of Christianity & Christian sects
|
|
280
|
Christian denominations
|
|
290
|
Comparative religion & other religions
|
|
300
|
Social Sciences
|
|
310
|
Statistics
|
|
320
|
Political science
|
|
330
|
Economics
|
|
340
|
Law
|
|
350
|
Public administration & military science
|
|
360
|
Social programs & services
|
|
370
|
Education
|
|
380
|
Commerce
|
|
390
|
Customs, etiquette, folklore
|
|
400
|
Language
|
|
410
|
Linguisitics
|
|
420
|
English & Old English
|
|
430
|
Germanic
|
|
440
|
French
|
|
450
|
Italian, Romanian, Rhaeto-Romanic
|
|
460
|
Spanish & Portuguese
|
|
470
|
Latin
|
|
480
|
Greek
|
|
490
|
Other languages
|
|
500
|
Natural Sciences & Math
|
|
510
|
Math
|
|
520
|
Astronomy
|
|
530
|
Physics
|
|
540
|
Chemistry
|
|
550
|
Earth sciences
|
|
560
|
Paleontology
|
|
570
|
Life sciences
|
|
580
|
Plants
|
|
590
|
Animals
|
|
600
|
Technology & Applied Sciences
|
|
610
|
Medicine
|
|
620
|
Engineering
|
|
630
|
Agriculture
|
|
640
|
Home economics (cooking)
|
|
650
|
Management
|
|
660
|
Chemical engineering
|
|
670
|
Manufacturing
|
|
680
|
Manufacture for specific uses
|
|
690
|
Building
|
|
700
|
Arts, Sports, Recreation
|
|
710
|
Civic & landscape art
|
|
720
|
Architecture
|
|
730
|
Plastic arts (sculpture)
|
|
740
|
Drawing & decorative art
|
|
750
|
Painting
|
|
760
|
Graphic arts
|
|
770
|
Photography
|
|
780
|
Music
|
|
790
|
Recreation, performing arts, sports
|
|
800
|
Literature & Rhetoric
|
|
810
|
American
|
|
820
|
English & Old English
|
|
830
|
Germanic
|
|
840
|
French
|
|
850
|
Italian, Romanian
|
|
860
|
Spanish, Portuguese
|
|
870
|
Latin
|
|
880
|
Greek
|
|
890
|
Other literatures
|
|
900
|
Geography, History, Biography
|
|
910
|
Geography, travel
|
|
920
|
Biography, genealogy, insignia
|
|
930
|
Ancient world
|
|
940
|
Europe
|
|
950
|
Asia
|
|
960
|
Africa
|
|
970
|
North America
|
|
980
|
South America
|
|
990
|
Other areas
|
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