Dewey Decimal Classification – 1876 – Melvil Dewey
Expansive Classificatgion – 1891 – C A Cutter
Library of Congress Classification –1904 – Library of Congress
Universal Decimal Classification—1905 – Paul Otlet and Henry La Fontain
Subject Classification—1906 – J D Brown
Colon Classification—1933 – S R Rangananthan
Bibliographic Classification—1935 -- H E Bliss
Riders Internation Classification—1961 – A F Rider
Broad System of Ordering—1978 – FID & UNESCO
