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1
Studies on the genus Leptodactylus (Amphibia: Leptodactylidae). II. Diagnosis and distribution of the Leptodactylus of Costa Rica
by Heyer, W. Ronald
Published 1968
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2
The tree-frogs (Family Hylidae) of Costa Rica: diagnosis and distribution
by Savage, Jay M., Heyer, W. Ronald
Published 1968
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