by Marcus Franda | .
by Satish C. Seth | .
by Carl F. Christ | .
by Edwin H. Colbert | .
by Paul H. Mussen | .
by Paul H. Mussen.
by T.William Lambe | Robert V. Whitman.
by T.William Lambe | .
by T.William Lambe | & Robert V. Whitman.
by C.K. Varshney | .
by L.D. Baver | .
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