00490nam a22001697a 450000500170000001000170001702000260003403500170006003700260007708200100010310000170011324500510013025000130018126000440019427000550023830000270029320100729122432.0  aB-406874-886  a9788170005834c900.00  aB-406874-886  bEss Ess Publications   a027.7  aSahai, Nath   aAcademic library system /cby Shri Nath Sahai   a2nd ed.   aNew Delhi bEss Ess Publications c2009  a4837/24, Ansari Road, DaryaganjbNew Delhie110002  axvi, 344p. c24cm(Hb)