Immune Response and Mitosis of Human Peripheral Blood Lymphocytes in vitro von Hirschhorn, Kurt, Bach, Fritz, Kolodny, Roselyn L., Firschein, I. Lester, Hashem, Nemat

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A New Record of Spea bombifrons from Northern Mexico and Remarks on the Status of the hammondii Group of Spadefoot Anurans von Firschein, I. Lester

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Definition of Some Little-Understood Members of the Leptodactylid Genus Syrrhophus, with a Description of a New Species von Firschein, I. Lester

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Population dynamics of the sickle-cell trait in the Black Caribs of British Honduras, Central America von FIRSCHEIN, I L

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Deletion of short arms of chromosome 4?5 in a child with defects of midline fusion von Hirschhorn, Kurt, Cooper, HerbertL, Firschein, I.Lester

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The Range of Cryptobranchus bishopi and Remarks on the Distribution of the Genus Cryptobranchus von Firschein, I. Lester

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Phragmosis and the "Unken Reflex" in a Mexican Hylid Frog, Pternohyla fodiens von Firschein, I. Lester

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Rediscovery of the Broad-Headed Frog, Eleutherodactylus laticeps (Duméril), of Mexico von Firschein, I. Lester

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A Peculiar Behavior Pattern in a Mexican Toad, Bufo nayaritensis, during Amplexus von Firschein, I. Lester

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A New Toad from Mexico with a Redefinition of the cristatus Group von Firschein, I. Lester

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Resurrection of Bufo occidentalis Camerano and Remarks on the Status of the Toad Bufo simus Schmidt von Firschein, I. Lester

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A High Crested Race of Toad (Bufo valliceps) and Other Noteworthy Reptiles and Amphibians from Southern Mexico von Firschein, I. Lester, Smith, Hobart M.

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A New Fringe-Limbed Hyla (Amphibia: Anura) from a New Faunal District of Mexico von Firschein, I. Lester, Smith, Hobart M.

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Herpetological Results of the University of Illinois Field Expedition, Spring 1949 II. Amphibia von Reese, Robert W., Firschein, I. Lester

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An Investigation into the Genetics and Racial Variation of BAIB Excretion1 von Gartler, Stanley M., Firschein, I. Lester, Kraus, Bertram S.

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The mathematical relations among plural births von ALLEN, G, FIRSCHEIN, I L

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A chromatographic investigation of urinary amino-acids in the great apes. Six figures von Gartler, Stanley M, FIRSCHEIN, I LESTER, DOBZHANSKY, THEODOSIUS

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The Ringed Salamander, Ambystoma annulatum, in Oklahoma von Firschein, I. Lester, Miller, Lowell S.

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A chromatographic investigation of urinary amino-acids in the great apes von Gartler, Stanley M., Firschein, I. Lester, Dobzhansky, Theodosius

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Herpetologica at the Front von Firschein, Irwin Lester

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