Kниги автора John Henry Schaffner

A key to the common families of seed plants in the central United States .

A Key to the Common Families of Seed Plants in the Central United States: With Glossary

Catalog of Ohio vascular plants : arranged according to the phyletic classification : with notes on the geographical distribution in the state, based mainly on specimens in the State Herbarium, Botanical Laboratory, the Ohio State University

Catalog of Ohio vascular plants, arranged according to the phyletic classification; with notes on the geographical distribution in the state, based . Laboratory, the Ohio State University