Botany : a textbook for colleges - 4 0 16; 1879-1961. Hill, J. Ben (John Ben),;Overholts, Lee O.,;Popp, Henry W.,;Grove, Alvin R.; 5 (New York : McGraw-Hill, 1960)
Keywords: 2 -- 0; 6; Botany. -- 20; 20; 2