Burch, J. B.

How to know the eastern land snails pictured-keys for determining the land snails of the United States occurring east of the Rocky Mountain Divide. - Dubuque, Iowa W. C. Brown Co. [1962] - 214 p. illus. 22 cm. - Pictured key nature series .

920222

61018612 /L/r892


Gastropoda--United States.

QL430.4 / .B87

594.3