Methods used in testing materials as repellents against the Japanese beetle /
Metzger, F. W.
Methods used in testing materials as repellents against the Japanese beetle / by F. W. Metzger - Washington : Govt. Print. Office, 1930 - 659-671 p. : ill. ; 27 cm - Journal of agricultural research ; 40 .
Methods used in testing materials as repellents against the Japanese beetle / by F. W. Metzger - Washington : Govt. Print. Office, 1930 - 659-671 p. : ill. ; 27 cm - Journal of agricultural research ; 40 .