Guide to the chemicals used in crop protection
Martin, H.
Guide to the chemicals used in crop protection (Book) - 3rd ed. - Ontario Department of Agriculture 1957 - 306 p. 28 cm.
Pesticides--Handbooks, Manuals, etc.
632.95 MAR / 3694
Guide to the chemicals used in crop protection (Book) - 3rd ed. - Ontario Department of Agriculture 1957 - 306 p. 28 cm.
Pesticides--Handbooks, Manuals, etc.
632.95 MAR / 3694