00429nam a2200133 a 450000500170000002000150001708200190003210000170005124501040006826000250017230000180019749000620021570000180027720251203092028.0  a8170223393  a307.1,bD, agr  aAgrawal, SP.  aEducational and social uplift of backward classes at what cast and how: Mandal commission and after  aDelhibConceptc1991  a288p.c22 cm.  aConcepts in communication informatics & librarianshipd26  aAggarwal, JC.