Apple spraying experiments in 1914
Morse, W.J., Shapovalov, M.
Apple spraying experiments in 1914 - Orono 1915 - 177-196 p. - Apple Maine Agricultural Experiment Station. Bulletin No. 240 .
Apple spraying experiments in 1914 - Orono 1915 - 177-196 p. - Apple Maine Agricultural Experiment Station. Bulletin No. 240 .