1.
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Cora ethnozoology, l knowledge; a bio-ecological and cross cultural approach Malkin, Borys
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2.
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Contributions to our knowledge of the duration of life in vertebrate animals Flower, Stanley Smyth
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3.
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A contribtion to our knowledge of the herpetofauna of the Mexican state of Aguascalientes Anderson, James Donald - William Z Lidicker, Jr
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4.
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Contribution to the knowledge of the nematodes that parasitize the reptiles of Mexico Caballero, R G
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