00798cam a22002651 4500 agr41000100 DLC 20260227110959.0 790517s1940 enk 000 0 eng c agr41000100 (OCoLC)4974026 U.S. Dept. of Agr. Libr. PCW DLC premarc SB951 .M485 1940 Martin, Hubert. The scientific principles of plant protection with special reference to chemical control, by Hubert Martin. [3d ed.] London, E. Arnold & co. [1940] x, 385 p. 23 cm. "First published 1928." "References" at end of each section. Fungicides. Insecticides. Plant protection. 10081 10081