Usher, George. A dictionary of botany including terms used in bio-chemistry, soil science, and statistics George Usher. - Princeton, N.J. Van Nostrand [1966] - 404 p. 920409 LCCN: 66025447 //r84 Subjects--Topical Terms: Botany--Dictionaries. LC Class. No.: QK9 / .U8 1966a Dewey Class. No.: 581.03