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charles b gnadinger
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Pyrethrum flowers
Charles B. Gnadinger, Robert Hale Nelson · McLaughlin Gormley King Co.
149 sayfa · 1975
Chrysanthemum cinerariifolium / Pyrethrum (Insecticide) / Botanical Insecticides / Pyrethrum (Plant) / Insecticides
Supplement to the second edition of Pyrethrum flowers
Charles B. Gnadinger · McLaughlin Gormley King
18 sayfa · 1936
Pyrethrum (Insecticide) / Pyrethrum (Plant)
Pyrethrum flowers. Supplement ... 1936-1945 ..
Charles B. Gnadinger · McLaughlin Gormley King co.
690 sayfa · 1945
Insecticides / Pyrethrum (Insecticide) / Pyrethrum (Plant)