Contributions from the United States National Herbarium Contributions from the U.S. National Herbarium United States. National Herbarium. contributor text series Washington, D.C Smithsonian Institution Press 1890- 1890
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ENG Suspended 1975-1999; v. 38, no. 7 (1974)-v. 39, [no. 1] (2000). Vols. 1-7 published by: United States. Dept. of Agriculture, Division of Botany; v. 8-29 by: United States National Museum Botany Periodicals https://www.biodiversitylibrary.org/bibliography/687