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By "Martin, William C "
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Natural hybridization of Helianthus longifolius with H atrorubens and H. occidentalis
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By: Smith, Dale M - Martin, William C
Type: Article
In: Rhodora
Volume: 61
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Date: 1959
Page Range: 140--147
Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]
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