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e a siegler
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Insecticides, equipment, and methods for controlling orchard insect pests
A. L. Quaintance, E. H. Siegler · U.S. Dept. of Agriculture
93 sayfa · 1931
Insecticides / Fruit-culture / Diseases and pests
The more important apple insects
A. L. Quaintance, E. H. Siegler · U.S. Dept. of Agriculture
106 sayfa · 1931
Apples / Diseases and pests / Insect pests
Information for fruit growers about insecticides, spraying apparatus, and important insect pests
A. L. Quaintance, E. H. Siegler, United States. Department of Agriculture. National Agricultural Library. · U.S. Dept. of Agriculture
99 sayfa · 1918
Fruit / Diseases and pests / Insecticides