1.
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The concise knowledge library: natural history Lydekker, Richard
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2.
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An analysis of the knowledge of the turtle fauna of Mexico Rozella B Smith - Hobart M Smith
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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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A survey of internal oral features of leptodactyloid larvae (Amphibia: Anura) Wassersug, Richard J - W Ronald Heyer
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5.
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In Search of Advice for Physicians in Entry-Level Medical Markets EHLERS, Lars
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