Hello,

You can apply for IGNOU to pursue PhD in Library and Information Science, it's one of the largest open university in India, and the courses offered are valid and recognized, the eligibility  criteria to pursue the same in IGNOU is passed master's degree in the relevant discipline from a recognized university securing 55% aggregate, the admission is done through entrance test conducted by the university, in case you have qualified NET you are exempted from appearing in the university level entrance test.