Years of Library Classifications

Dewey Decimal Classification (DDC) 1876

Expansive Classification (EC) 1891

Library of Congress Classification (LC) 1904

Universal Decimal Classification (UDC) 1905

Subject Classification (SC) 1906

Colon Classification (CC) 1933

Bibliographic Classification (BC) 1935

Library Bibliographic Classification (LBK) 1959

International Classification (IC) 1961

Broad System of Ordering (BSO) 1978