Dear Divya, You can get the DDC no for the titles from the Library of Congress, British Library .... Click for Library of Congress Online Catalogue http://catalog.loc.gov/cgi-bin/Pwebrecon.cgi?DB=local&PAGE=First Click for British Library Integrated Catalogue http://catalogue.bl.uk/F/9T8VCPAAY3QFCUDCUFD15EANU745I4FIEBJYLYPUT129RH6VIA-01040?func=file&file_name=find-b&local_base=BLAC Thanks and Regards Ajay Kumar Sharma Project Associate, INDEST-AICTE Consortium Central Library, IIT Delhi Hauz Khas, New Delhi-110016 011-26591467 (O) 09899339808 (M) Web: http://www.geocities.com/ajaysharma_lib/