Revision of the North American Species of Xanthium

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Revision Of The North American Species Of Xanthium; Volume 4, Issue 2 Of Fieldiana: Botany; Publication (Field Museum Of Natural History: 1909); Revision Of The North American Species Of Xanthium; Charles Frederick Millspaugh
Charles Frederick Millspaugh, Earl Edward Sherff
Field Museum of Natural History, 1919
Xanthium