00747cam a22002171 4500 agr63000445 DLC 20260227111022.0 820519s1963 dcuab 000 0 eng agr63000445 (OCoLC)16762897 DLC OrPS OCoLC DLC premarc S21 .A72 no. 1287 Cook, William Carmichael, 1895-1967. Ecology of the pea aphid in the Blue Mountain area of eastern Washington and Oregon Washington] Agricultural Research Service, U.S. Dept. of Agriculture [1963] 48 p. illus., maps. 24 cm. Pea aphid. Technical bulletin (United States. Department of Agriculture) ; no. 1287. 11905 11905