Ranganathan, S.R.. Reference service / S.R. Ranganathan. - 2nd ed / . - Bangalore : Sarada Ranganathan Endowment for Library Science , 1961. - 432p. : ill.,figs. ; 23cm . NULL ISBN: 8185273200 Rs. 95.00 Subjects--Index Terms: REFERENCE SERVICE Dewey Class. No.: 025.5 / RAN/R