00442nam a2200169 a 450000500170000002000150001708200150003210000190004724500190006626000280008530000270011363000200014096400190016099700110017999900150019095200670020520251202164217.0  a0706929519  a025.1bKUM  aKumar, krishan  aLibrary manual  aDelhibVikas Pub.c1985  axii,386 p.b23 cm.cHB  aLibrary science  bENGcdefg_  a1923 C  c3429d3429  00104070aPUbPUd1998-04-08g492.50l0o025.1 KUMp1923yBK