Relative efficiency of some copper dusts and sprays in the control of potato dis
Boyd, O.C.
Relative efficiency of some copper dusts and sprays in the control of potato dis - Ithaca 1926 - 1-68 p. - Cornell Agricultural Experime .
Relative efficiency of some copper dusts and sprays in the control of potato dis - Ithaca 1926 - 1-68 p. - Cornell Agricultural Experime .