problems and prospects Dubey, K.N. Yadav, G.P. Chourasia, H.K. text Ranchi S.K Publishing Company 2011 monographic 292p 22cm.(Hb.) ed. by K.N. Dubey; G.P. Yadav [and] H.K. Chourasia It includes list of contributors and references 378.54 9788190935081 ENG-123967 DBAD/PUB 20180906120346.0