Biodiversity Heritage Library
By "Wilbur, Robert L. "
Flora Costaricensis /
By: Burger, William C. - Luteyn, James L., - Wilbur, Robert L. - Field Museum of Natural History.
Publication info: Chicago, Ill. :Field Museum of Natural History,c2005.
Holding Institution: University Library, University of Illinois Urbana Champaign
The leguminous plants of North Carolina.
By: Wilbur, Robert L.
Publication info: [Raleigh]North Carolina Agricultural Experiment Station,1963.
Holding Institution: University Library, University of North Carolina at Chapel Hill (archive.org)