TY  - BOOK
AU  - Savage,Jay Mathers
ED  - Los Angeles, Calif.
TI  - The geographic distribution of frogs: patterns and predicitions 
AV  - QL668E2 S23
U1  - 597.8 23
PY  - 1973///
CY  - Columbia
PB  - University of Missouri Press
KW  - Frogs
KW  - Ranas
N1  - Bibliografía: p. 443-445
ER  -