by Brown, T.A | .
by Natalic Bray | .
by N.M. Mohsenin | .
by Ussr | .
by Vereezkey, L | Magyuar, K.
by Thomas P. Singer | .
by R.W. Frei | U.A. Brinkman.
by Janossy,Ferenc | .
by Collins,Marilyn C | .
by T John Wilson | .
by Philip Abelson | .
by Michael Allaby | .
by R Davies | .
by R.K Robinson | .
by V Jensen | A.Kjoller L.N.Sorensen.
by Assam Science Society | .
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