Biodiversity Heritage Library
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By "Wilbur, Robert L. "
Flora Costaricensis / William Burger, editor.
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.
Contributed by: University of Illinois Urbana Champaign
The leguminous plants of North Carolina.
By: Wilbur, Robert L.
Publication info: [Raleigh]North Carolina Agricultural Experiment Station,1963.
Contributed by: University Library, University of North Carolina at Chapel Hill (archive.org)