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  1. The viperid snake Azemiops: its comparative cephalic anatomy and phylogenetic position in relation to Viperinae and Crotalinae [by] Karel F. Liem, Hymen Marx, and George B. Rabb.
    Publication info: [Chicago]Field Museum of Natural History,1971.
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  2. Fieldiana.
    Publication info: [Chicago] :Chicago Natural History Museum,[1945?-.
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