The Leguminosae of Porto Rico.
By J. Perkins.
- Washington, Govt. print. off., 1907.
- v, 133-220, vii-ix p. 25 cm.
- Smithsonian institution. United States national museum. Contributions from the United States national herbarium. vol. X, pt.4 .
"Bulletin of the United States national museum : Issued June 10, 1907."