Keys.
Based on post-flora characters, to the herbaceous plants of the Cayuga flora.

APA Citation

Cohn, J. (1941). Keys: Based on post-flora characters, to the herbaceous plants of the Cayuga flora. [Ithaca, N. Y.].

MLA Citation

Cohn, Julius, 1911-. Keys: Based On Post-flora Characters, to the Herbaceous Plants of the Cayuga Flora. [Ithaca, N. Y.], 1941.

Warning: These citations may not always be complete (especially for serials).