Text of Dewey Decimal Classification System Purdue University Libraries use the Dewey Decimal Classification...
The Purdue University Libraries use the Dewey Decimal Classification System to classify and arrange their collections. In this system, all knowledge is represented by 10 broad subject classes:
000 Generalities 100 Philosophy and related disciplines 200 Religion 300 The social sciences 400 Language 500 Pure sciences 600 Technology (applied sciences) 700 The arts 800 Literature 900 General geography and history
The Dewey Decimal system is a hierarchical system, which means, within each broad class, it develops progressively from the general to the specific. For example:
600 Technology (applied sciences) 640 Domestic arts and sciences 646 Sewing, clothing, personal grooming 646.7 Personal grooming 646.72 Personal appearance 646.724 Care of hair 646.7242 Professional hairdressing for women and girls
Excerpts from Marty Bloomberg and Hans Weber, An Introduction To Classification and Number Building In Dewey (Littleton, CO: Libraries Unlimited, Inc., 1976). Each item in the Libraries has a unique call number and is filed under that number on the shelves. To ensure that you find the exact item you want, be sure to copy the complete call number.
Dewey Decimal Classification System
How Call Numbers Work
Using decimal notation, books areshelved numerically (left to right) byh fi li i h ll b I
If all the information in the callnumber is identical, the books areh d di
All books of the same number groupare then arranged according to the
d li f h ll b fithe first line in the call number. Inother words, they are arrangednumber by number. For example611.31 comes before 611.4 because itis a smaller number.
then arranged according topublication dates, chronologicallyfrom oldest to newest. Multi-volume sets are filed numericallyby volume number.
second line of the call number, firstalphabetically, then number bynumber (D185n comes before D19a)and then alphabetically again by thelast letter(s).