. Brigham Young University science bulletin. Biology -- Periodicals. ^-0J<^ -Ki^rov;o3 â i Brigham Young University Science Bulletin ..If ^ TAXONOMIC STUDY OF CROTAPHYTUS COLLARIS ETWEEN THE RIO GRANDE AND COLORADO RIVERS by William Ingram III and Wilmer W. Tanner. BIOLOGICAL SERIESâVOLUME XIII, NUMBER 2 April 1971. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brigham Young University. Provo, Utah : Brigham Young Univ


. Brigham Young University science bulletin. Biology -- Periodicals. ^-0J<^ -Ki^rov;o3 â i Brigham Young University Science Bulletin ..If ^ TAXONOMIC STUDY OF CROTAPHYTUS COLLARIS ETWEEN THE RIO GRANDE AND COLORADO RIVERS by William Ingram III and Wilmer W. Tanner. BIOLOGICAL SERIESâVOLUME XIII, NUMBER 2 April 1971. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brigham Young University. Provo, Utah : Brigham Young University


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