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Some Effects of Carcinogens on Yeasts
Vol 28, Page 1, Date 1941
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A Monograph of the Genus Parmelia in North America, North of Mexico
Vol 28, Page 31, Date 1941
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Binary Variation in Tradescantia Bracteata
Vol 28, Page 147, Date 1941
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On the Flora of the Frontier Formation of Southwestern Wyoming
Vol 28, Page 165, Date 1941
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The North American Asclepiadaceae. I. Perspective of the Genera
Vol 28, Page 193, Date 1941
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Two New Asclepiads from the Southwestern United States
Vol 28, Page 245, Date 1941
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A Preliminary Survey of the Genus Tripsacum
Vol 28, Page 249, Date 1941
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Miscellaneous New Asclepiadaceae and Apocynaceae from Tropical America
Vol 28, Page 271, Date 1941
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The Technique and Use of Mass Collections in Plant Taxonomy
Vol 28, Page 287, Date 1941
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Mass Collections: Camassia Scilloides
Vol 28, Page 293, Date 1941
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Mass Collections: Rubus Odoratus and R. parviflorus
Vol 28, Page 299, Date 1941
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Dichophyllum Moorei and Certain Associated Seeds
Vol 28, Page 375, Date 1941
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A Revision of the North American Species of the Genus Anisacanthus
Vol 28, Page 385, Date 1941
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Contributions Toward a Flora of Panama. V. Collections Chiefly by Paul H. Allen, and by Robert E. Woodson, Jr. and Robert W. Schery
Vol 28, Page 409, Date 1941
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The Cytogenetics of Poa pratensis
Vol 28, Page 493, Date 1941