00429nam a2200157 a 450000500170000008200170001710000140003424500430004826000250009130000200011669000250013696400210016199700120018299900150019495200620020920251203090510.0  a300.72,braj  aRaj, Hans  aTheory and practice in social research  aDelhi: Surjeetc1987  axi, 404p.c22cm  aResearch methodology  bEngcdefgPUL  a16247 W  c9772d9772  02104070aPUbPUd1998-04-08l0o300.72, rajp16247yBK