Yazar
Jack R Coulson
6 cilt bulundu.
Jack R. Coulson · U.S. Dept. of Agriculture, Agricultural Research Service
529 sayfa · 1992
Beneficial insects / Weeds / Biological control / Insect pests
Jack R. Coulson · Available from National Technical Information Service
645 sayfa · 2000
Agricultural pests / Biological control / Research / United States. Department of Agriculture / United States
Jack R. Coulson · U.S. Dept. of Agriculture, Agricultural Research Service
324 sayfa · 1988
Biological control / Defesa Fitossanitaria / Insect pests / Beneficial insects / Weeds
Jack R. Coulson, Richard S. Soper, Williams, David W. · U.S. Dept. of Agriculture, Agricultural Research Service
336 sayfa · 1991
Agricultural pests / Congresses / Biological control / Biological pest control agents / Weeds
Joint American-Soviet Conference on Use of Beneficial Organisms in the Control of Crop Pests (1979 Washington, D.C.), Jack R. Coulson, L. Larson, D. C.) Joint American-Soviet Conference on Use of Beneficial Organisms in the Control of Crop Pests (1979 : Washington · Entomological Society of Amer
62 sayfa · 1981
Biological control / Congresses / Pests / Science/Mathematics