A revision of the North American aphids of the genus Myzus /
Mason, Preston W. 1889-
A revision of the North American aphids of the genus Myzus / by Preston W. Mason. - Washington, D.C. : U.S. Dept. of Agriculture, 1940. - 31 p. : ill. ; 23 cm. - Miscellaneous publication / United States Department of Agriculture ; no. 371 . - Miscellaneous publication (United States. Department of Agriculture) ; no. 371. .
Caption title. Contribution from Bureau of Entomology and Plant Quarantine. "The drawing ... were made by Amy Awl and H.B. Bradford."--Foot-note, p. 1. Copy 2: Amer. Ent. Soc. QL523.A6M3. Includes index.
Bibliography: p. 21-22.
agr40000136
Myzus--Classification.
QL523.A6 / M3
1 / Ag84M no.371
A revision of the North American aphids of the genus Myzus / by Preston W. Mason. - Washington, D.C. : U.S. Dept. of Agriculture, 1940. - 31 p. : ill. ; 23 cm. - Miscellaneous publication / United States Department of Agriculture ; no. 371 . - Miscellaneous publication (United States. Department of Agriculture) ; no. 371. .
Caption title. Contribution from Bureau of Entomology and Plant Quarantine. "The drawing ... were made by Amy Awl and H.B. Bradford."--Foot-note, p. 1. Copy 2: Amer. Ent. Soc. QL523.A6M3. Includes index.
Bibliography: p. 21-22.
agr40000136
Myzus--Classification.
QL523.A6 / M3
1 / Ag84M no.371