Field experiments in spraying apple orchards in 1913 and 1914
Pickett, B.S., and Others
Field experiments in spraying apple orchards in 1913 and 1914 - Urbana 1918 - 430-508 p. - Experiment, Apple Illinsois Agricultural Experiment Sttion. Bulletin No. 206 .
Field experiments in spraying apple orchards in 1913 and 1914 - Urbana 1918 - 430-508 p. - Experiment, Apple Illinsois Agricultural Experiment Sttion. Bulletin No. 206 .