Brock, W.S., & Flint, W.P. 1919 Field Experiments in spraying for control of San José scale, 1919.. Circular (University of Illinois, Agricultural Experiment Station and Extension) No. 239: 4 pp.
Notes: Evaluation of several chemical controls.
Brock, W.S., & Flint, W.P. 1919 Field Experiments in spraying for control of San José scale, 1919.. Circular (University of Illinois, Agricultural Experiment Station and Extension) No. 239: 4 pp.
Notes: Evaluation of several chemical controls.