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Information Sources and Services
Notes Katz, William A. (1987) Introduction to reference work: reference service and reference
process. v.2. Ed. 5. McGraw-Hill, New York.
Krishan Kumar (1996) Reference service. Ed. 3. Vikas Publishing, New Delhi.
Online links www.rmit.edu.au/library/dds
www.bl.uk/articles
www.itcompany.com/inforetriever/cir_dd.hstm
136 LOVELY PROFESSIONAL UNIVERSITY
