01073cam a22002771 4500 agr68000281 DLC 20260227111031.0 710901s1968 dcua b 000 0 eng c agr68000281 U.S. Nat'l Agr. Libr. DLC DLC S21 .A72 no. 1382 1Ag84Te no. 1382 632/.8 Nielson, Mervin William. The leafhopper vectors of phytopathogenic viruses (Homoptera, Cicadellidae); taxonomy, biology, and virus transmission, by M. W. Nielson. Washington, U.S. Agricultural Research Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1968. 386 p. illus. 24 cm. 1.50 United States. Dept. of Agriculture. Technical bulletin ; no. 1382 Bibliography: p. 318-368. Leafhoppers. Virus diseases of plants. Insects as carriers of plant disease. Technical bulletin (United States. Department of Agriculture) ; no. 1382. 12573 12573