by Bartz, Albert E | .
by Hill, John W | .
by Dobyhanshky , Theodosius | .
by Hans Raj | .
by L.H. Haney | .
by Olin Sewall Pettingill | .
by Margaret S. Chney | Margaret L. Ross.
by Jules Janick | .
by Ahuja , B N | .
by Neal , James M | .
by Kerlinger , Fred N | .
by Stephen R. Chapman | Lark P. Carter.
by Jack H.Liewellyn | .
by Fred N. Kerlinger | .
by George G. Thompson | .
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