by A. Mahadevan | .
by Arun Misra | .
by V.P. Aggarwal | V.K. Sharma.
by S.P Roy Chaudhury | D.S. Gupta.
by K.S. Bilgrami | T. Prasad R.K. Sinha.
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by C.T.Bingham | .
by Gahan,C.J | .
by Chattopadhyaya , Debiprasad | .
by J Forbes Royle | .
by S K Jain | R R Rao.
by V S Agarwal | .
by P K K Nair | .
by T M Varghese | .
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