by Szwarc, Michael Ed | .
by Hilditch, T.P | .
by Beatrice Paolucci | .
by Paul A. Colinvaux | .
by R.Lal | .
by Alexender S. Podolsky | .
by Nicholas Polunin | .
by C.C. Delwiche | .
by Jerome O. Nriagn | .
by R.M. Nisbet | W.S.C. Gurney.
by R.H. Pain | B.J. Smith.
by G. E. Shuliman | .
by Ernst S. Reese | Frederick J. Lighter.
by W.R. Butt | .
by H. Ghadimi | .
by Gordon Maskew Fair | .
by Maskew Gordon Fair | .
by Jerome O. Nriagu | .
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