On the uniquely fragmented distribution of a rare Panamanian snake, Dipsas nicholsi (Colubridae: Dipsadinae) /
Charls W. Myers, Roberto Ibanez D., and John E. Cadle.
- New York : American Museum of Natural History, 2007.
- 18 p. : ill. (some col.).
- American Museum Novitates No. 3554 0003-0082 .
- American Museum Novitates No. 3554 .