01262cam a22003371a 4500 agr40000136 DLC 20260227110958.0 860618s1940 dcua b f001 0 eng c agr40000136 (OCoLC)13746268 U. S. Dept. of Agr. Library PPAN DNAL DLC premarc n------- QL523.A6 M3 1 Ag84M no.371 L700 L001 Mason, Preston W. (Preston Walter), 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 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. Bibliography: p. 21-22. Copy 2: Amer. Ent. Soc. QL523.A6M3. Includes index. Myzus Classification. Miscellaneous publication (United States. Department of Agriculture) ; no. 371. 10016 10016