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Supplement to the monograph of the North American Umbelliferae
Coulter, John M.;Rose, J. N.
Date:
1909
Citation:
Coulter, John M. and Rose, J. N. 1909. "Supplement to the monograph of the North American Umbelliferae." in Systematic investigations and bibliography, 441–451. Contributions from the United States National Herbarium. Washington, DC: Government Printing Office.