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By: Rosen, Donn Eric, - Kallman, Klaus D.Edition:Publication info: New York, N.Y American Museum of Natural History [1969]Volume: no.2379 (1969)Series:Holding Institution: American Museum of Natural History LibrarySubjects: Alta Verapaz Central America Classification Fishes Guatemala Mexico Xiphophorus Xiphophorus helleri signumBHL Collections: