This book provides a complete course in the practice of DDC assuming no background knowledge of the DDC on part of the users. Examplese have been graded and number building has been depicted through facet formulae and equations.

This book introduces the process of assigning class numbers based on the 23rd edition (2011) of the Dewey Decimal Classification. The techniques of number building, involving the use of various auxiliary tables and multiple syntheses are demonstrated along with the structure of the DDC and the subject analysis of the documents to be classified.