| Author: | Duellman, William Edward, 1930- |
| Subject: | QH, QL, Ptychohyla, Amphibians -- Mexico, Amphibians -- Central America |
| Format: | Text |
| Date issued: | 2011 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | A Review of the Middle American Tree Frogs of the Genus Ptychohyla [electronic resource] / William Edward Duellman |