New York Academy of Science 1957 .
414 p.

By Wetmore, Alexander.
New York New York Academy of Science 1927 .
245-406 p., 7l.

Easton, PA Pennsylvania Academy of Science 1993 .
ix, 444 p. 24 cm..
0945809085

Easton, PA Pennsylvania Academy of Science 1995 .
xx, 612 p. 24 cm..
0945809115

Easton, PA Pennsylvania Academy of Science 1994 .
x, 461 p. 24 cm..
0945809093