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The Sporangium of the Ophioglossales
Vol 44, Iss 1, Page 34
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The Roots of Lycopodium pithyoides
Vol 44, Iss 1, Page 57
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The Black-Fruited Crataegus of Western North America
Vol 44, Iss 1, Page 64
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Mechanics of Cell Division
Vol 44, Iss 1, Page 67
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Plant Chemistry
Vol 44, Iss 1, Page 68
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Flora of Winneshiek Co., Iowa
Vol 44, Iss 1, Page 69
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A Bacterial Plant-Tumor
Vol 44, Iss 1, Page 76
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Undescribed Plants from Guatemala and Other Central American Republics XIX
Vol 44, Iss 2, Page 108
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Plant BreedingPlant-Breeding; Comments on the Experiments of Nilsson and Burbank. Hugo DeVries
Vol 44, Iss 2, Page 147
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Position of the Nucleus
Vol 44, Iss 2, Page 155
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Contributions from the Gray Herbarium
Vol 44, Iss 3, Page 231
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Chromosomes of Oenothera
Vol 44, Iss 3, Page 238
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Subsoil Water and Forests
Vol 44, Iss 3, Page 239
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News
Vol 44, Iss 3, Page 240
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The Chrysanthemum Ray Blight
Vol 44, Iss 4, Page 241
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Mendelian Inheritance
Vol 44, Iss 5, Page 387