Results of a herpetological collection from eastern central Mexico.
A contribution to a knowledge of the herpetological fauna of El Peten, Guatemala.
Four papers on the application of statistical methods to herpetological problems.
Herpetological results of the University of Illinois field expedition, spring 1949.
Herpetological fauna of Jackson and Union counties, Illinois.
Herpetological survey of the pine hills area of southern Illinois.
Notes on a herpetological collection from Oaxaca and other localities in Mexico.