This is a general work on the amphibians of North America that embraces the results of a thorough study of the characters of the species, with their variatiions, which has been rendered effective by the very full collection contained in the National Museum, and which this work illustrates.
"This is a general work on the amphibians of North America that embraces the results of a thorough study of the characters of the species, with their variatiions, which has been rendered effective by the very full collection contained in the National Museum, and which this work illustrates."@en
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