Corpus ID: 127896817

An analysis of toads of the Bufo americanus group in a contact zone in central northern North America

@inproceedings{Cook1983AnAO,
  title={An analysis of toads of the Bufo americanus group in a contact zone in central northern North America},
  author={R. Cook},
  year={1983}
}
Oscillation of an Anuran Hybrid Zone: Morphological Evidence Spanning 50 Years
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