Variation in the reproductive parameters of three neotropical snakes, Coniophanes fissidens, Dipsas catesbyi, and Imantodes cenchoa /
George R. Zug, S. Blair Hedges, and Sara Sunkel.
- Washington : Smithsonian Institution Press, 1979.
- iii, 20 p. : ill. ;diagrs, maps 27 cm.
- (Its contributions to zoology ; no. 300) .