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Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 2000)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 2002)

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Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1904)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1932)

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Systematics of snakes referred to Dipsas variegata in Panama and western South America, with revalidation of two species and notes on defensive behaviors in the Dipsadini (Colubridae) - Cadle, John E. (American Museum of Natural History, 2003)

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