00513nam a22001577a 4500003000400000005001700004008004100021020002300062035001300085040001500098082000800113100001800121245016200139260003700301300001700338dpl20190403122405.0190403b           ||||| |||| 00| 0 eng d  a817000263Xc450.00  aB-031886  aDPLbHNc0  a020  asehgal, R.L.   aGuide to Library and Information Science:bPart III (library organisation & administration) Part IV ( Reference Services & Information sources)cR.L. Sehgal   anew delhi bEss Ess publications  a109P:c23cms