by Harvey Monroe Hall
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A Yosemite flora
Compositae of southern California
Rubber-content of North American plants
Rubber-content of North American plants ...
Flora of the Pacific Coast
The phylogenetic method in taxonomy
Monographie der südamerikanischen Gattu...
Cell cultures of Haplopappus gracilis as...
Duration of the mitotic cycle in cell cu...
Physiological and cytological studies on...
A new Haplopappus (Asteraceae: Astereae)...
Five new taxa of Haplopappus (Compositae...