**5. Limitation of the study**

The study covers research works in LIS at the PhD level, which have been already awarded for doctoral degree by Indian universities. The period of coverage is from 2011 to 2018, a period of 8 years. It has considered only those titles of doctoral theses that appeared in the INFLIBNET-Indcat (http://incat.inflibnet.ac.in/indcat). Various universities that have an LIS department and have uploaded theses on INFLIBNET have been searched and data accrued year-wise.
