by R.P. Singhal | .
by Ranjan Kumar Basan | .
by S.L. Chopra | J.S. Kanwar.
by Arun Kumar Saha | .
by N.C. Singhal | .
by B.S. Daliya | .
by C. Dharmalingam | K. Sivasubramaniam Shiv K. Yadav.
by Indian Ecological Society | .
by B.D. Singh | .
by Phundan Singh | .
by G.N. Kulkarni | .
by P.H. Pandey | .
by Hari Har Ram & Hari Govind Singh | .
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