NUST PAST EXAMINATION PAPERS
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Duellman, William Edward, 1930-
(12)
The Amphibians and Reptiles of Michoacán, México [electronic resource] / William Edward Duellman
Amphibians and Reptiles of the Rainforests of Southern El Petén, Guatemala [electronic resource] / William Edward Duellman
Descriptions of New Hylid Frogs From Mexico and Central America [electronic resource] / William Edward Duellman
Descriptions of Two Species of Frogs, Genus Ptychohyla : Studies of American Hylid Frogs, V [electronic resource] / William Edward Duellman
A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México [electronic resource] / William Edward Duellman
The Genera of Phyllomedusine Frogs (Anura : Hylidae) [electronic resource] / William Edward Duellman
Neotropical Hylid Frogs, Genus Smilisca [electronic resource] / William Edward Duellman
A New Subspecies of Lizard, Cnemidophorus sacki, from Michoacán, México [electronic resource] / William Edward Duellman
A Review of the Frogs of the Hyla bistincta Group [electronic resource] / William Edward Duellman
A Review of the Middle American Tree Frogs of the Genus Ptychohyla [electronic resource] / William Edward Duellman
Systematic Status of the Colubrid Snake, Leptodeira discolor Günther [electronic resource] / William Edward Duellman
A Taxonomic Study of the Middle American Snake, Pituophis deppei [electronic resource] / William Edward Duellman
