Reference service/
Ranganathan, R.N
Reference service/ by S R Ranganathan - Newdelhi: Ess Ess Publications, 1940. - 432p. 23 c.m - Ranganathan series in library science, 8. .
8170004659
Reference services (Libraries) Bibliotheques.--Services de reference.
025.52 / RAN/R
Reference service/ by S R Ranganathan - Newdelhi: Ess Ess Publications, 1940. - 432p. 23 c.m - Ranganathan series in library science, 8. .
8170004659
Reference services (Libraries) Bibliotheques.--Services de reference.
025.52 / RAN/R