TY  - GEN
AU  - Edgren,Richard A.
TI  - Synopsis of the snakes of the genus Heterodon, with the diagnosis of a new race of Heterodon nasicus Baird and Girard
PY  - 1952///
CY  - Chicago
KW  - Snakes
KW  - Genus Heterodon
KW  - Diagnosis
ER  -