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1
The genera of grasses of the United States with special reference to the economic species
Veröffentlicht 1920Buch -
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Flora of southwestern Kansas. Report on a collection of plants made by C.H. Thompson in 1893
Veröffentlicht 1896Buch -
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Flora of the district of Columbia and vicinity With the assistance of the botanists of Washington
Veröffentlicht 1919Buch -
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