by: Aparupa Dasgupta ,Tripathi,S.K.
by: Chandra, S.
by: Rao, R.R.
by: Lankster, E.R.
by: Bhunia, G. S.
by: J.C. Jana,Nilesh Bhowmick
by: S.K. Singh,Garg,H.P.
by: Garg,H.P.,Gangwar, B.
by: Garg,H.P.,Saxena,P.
by: Kerzuhiko,Naokisakuria,Yoshio Masuda
by: Dinesh Kumar , S.C. Gupta,S.P.S. Ahlawat
by: A.K.Tripathi,S.K. Singh
by: Mujeebur R. Khan,R.N. Pandey
by: Mujeebur, R. Khan
by: Mahadevan, A.
by: Rajamanickam
by: V. A Parthasarathy,Singh, S.
by: Parthasarathy, V.A.
by: Talbot, G
by: Albert, G.
by: Boulenger, G.A.
by: Marie C. Stopes
by: Ratna Kumar Pasala
by: S.M. Vasudeva,S.S. Bir
by: Dr. Madan Pal Singh
by: Sati, V.P. ,Dubey, S.C.
by: Arrow, G.J.
by: Arrow, G.J.
by: Arrow, G.J.
by: Maulik, S.
by: Jacoby, M.
by: Maulik, S.
by: Maulik, S.
by: Marshal, G.A.K.
by: Cameron, M.
by: Cameron, M.
by: Cameron, M.
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by: Andrews, H.E.
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by: Andrews, H.E.
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by: A. K. Roy,H. K. Chourasia
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by: Saklani, P.S.
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by: Saklani, P.S.
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by: Srivastava, R.A.K.
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by: Saklani, P.S.
by: S.K. Chauhan