@book{18526,
	author = {Schmidt, Karl Patterson, and Andrews, E. Wyllys},
	title = {Notes on snakes from Yucatan,},
	note = {(In Zoological series of Field Museum of Natural History.  Chicago, 1933-1938.  24 cm.  v. 20, no. l8, p. 167-187.  illus.)}
}