R L Sehgal Designing and evaluation of research in library science (v.2)/ by R L Sehgal - New Delhi: Ess Ess, 1998. - 363p. ISBN: 9788170002291 Subjects--Topical Terms: Library Science EvaluationResearch Library ScienceLibrary and Information Science Dewey Class. No.: 020.72 / SEH/D