Asa Gray

The elements of botany : for beginners and for schools ; Manual of the botany of the Northern United States, including the district east of the Mississippi and north of North Carolina and Tennessee

Asa Gray, Sereno Watson, John Merle Coulter, 1887 .

Structural Botany, or Organography on the Basis of Morphology. to Which Is Added the Principles of Taxonomy and Phytography, and a Glossary of Botanical Terms

Asa Gray, A. Gray, 2010 .

How plants grow... / by Asa Gray

Asa Gray, 1858 .