The colon Classification was the brain child of Dr. S.R Ranganath anand came into existence in the year 1933 . Colon Classification has gained great importance in the field of library classification . Dr .S. R Ranganathan in 1924 analyzed the 11th edition of D D C and found that the scheme was not capable enough to accommodate the new subjects emerging in the field of sciences. Colon Classification has been called Analytico - synthetic scheme due to the subject analysis for classification . The Colon Classification seems difficult due to the use of complex notation but infactit was necessary to provide class numbers for micro subjects .
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