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New York, N.Y. : American Museum of Natural History, 1971
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Inter-Research Science Center, 1990
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Universidad Nacional Autonoma de Mexico, 2023
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Universidad Estatal a Distancia, 2021
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Universidad Nacional de Costa Rica, 2019
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Universidad de Costa Rica, 2015
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Society for the Study of Amphibians and Reptiles, 2007
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Society for the Study of Amphibians and Reptiles, 2007
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1998
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Cambridge University Press, 1997
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Springer Science and Business Media LLC, 1996
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Kluwer Publishers, 1996
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JSTOR, 1995
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Missouri Botanical Garden, 1995
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JSTOR, 1989
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Informa UK Limited, 2023
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Universidad Estatal a Distancia, 2021
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Cambridge University Press (CUP), 2019
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Universidad de Costa Rica, 2018