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Hall, Harvey Monroe

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Rubber Plant Survey of Western North America
Rubber-content Of North American Plants...
Rubber-Content of North American Plants
Rubber-content of North American plants
Genus Haplopappus : A Phylogenetic Study in the Compositae
Phylogenetic Method in Taxonomy : The North American Species of Artemisia, Chrysothamnus, and Atriplex
Compositae of southern California
Compositae of Southern California