DDC
The Dewey Decimal Classification (DDC) was formulated in 1873 by Late Melvil Dewey (1851-1931. Melville Louis Kossuth (Melvil) Dewey (December 10, 1851 - December 26, 1931) was an American librarian and educator. The first edition entitled "A classification and subject index for cataloguing and arranging the books and pamphlets of a library" was published in 1876. The first edition consisted of 12 pages of preparatory matter, 12 pages of tables and 18 pages of index, a total of 42 pages. Edition after edition came out with additions and alterations till the 14th edition published in 1942. The 15th edition known as “Standard Library Edition” came out in 1951. The 19th edition of 3361 pages came out in 1979. The 19th edition was in 3 volumes: Introduction, Table (Volume 1), Schedules (Volume 2) and Relative index (volume 3). The 20th edition of 3383 pages came out in 1989. The 20th edition was in 4 volumes. The subsequent editions were also published in 4 volumes. Its latest 23rd edition was published in 2011.
Dewey divided the field of knowledge into ten main classes as given below:
000 Generalities
100 Philosophy and related disciplines
200 Religion
300 Social Sciences
400 Language
500 Pure Sciences
600 Technology
700 Fine Arts
800 Literature
900 General Geography and History and their auxiliaries
