1. http://nlist.inflibnet.ac.in/ 2. https://doaj.org 3. www.doabooks.org/ 4. http://dspace.wbpublibnet.gov.in 5. http://www.wbsubregistration.org/library.php 6. http://www.caluniv.ac.in/opac/ 7. http://shodhganga.inflibnet.ac.in/
