Yazar
Alfred Cookman
7 cilt bulundu.
Cilt sonuçları
Arsenate of lead as an insecticide against the tobacco hornworms
Alfred Cookman Morgan · U.S. Dept. of Agriculture, Bureau of Entomology
10 sayfa · 1913
Insecticides / Lead arsenate / Tobacco / Diseases and pests / Sphingidae
Timber pests and their control
Alfred Cookman Oliver · Timber Research and Development Association
64 sayfa · 1964
Forest insects / Wood borers
This new America
Alfred Cookman Oliver · Longmans, Green and co.
188 sayfa · 1937
Civilian Conservation Corps (U.S.) / Ontology / Mathematics / Philosophy