Study of apple maggot control measures
Chapman, P.J., Hammer, O.H.
Study of apple maggot control measures - Geneva 1934 - 1-40 p. - Apple New York Agricultural Experiment Station. Bulletin No. 644 .
Study of apple maggot control measures - Geneva 1934 - 1-40 p. - Apple New York Agricultural Experiment Station. Bulletin No. 644 .