Yazar
Ephraim Porter Felt
26 cilt bulundu.
Felt, Ephraim Porter · University of the state of New York
60 sayfa · 1899
Beneficial insects / Insects
Felt, Ephraim Porter · The University of the State of New York
84 sayfa · 1917
Household pests / Injurious and beneficial Insects / Insects, Injurious and beneficial / Insect pests / Beneficial insects
Felt, Ephraim Porter · New York State Education Dept.
877 sayfa · 1905
Insect pests / Trees / Diseases and pests / Beneficial insects / Arbres
Felt, Ephraim Porter · University of the State of New York
47 sayfa · 1909
Control / Insect pests / Flies
Felt, Ephraim Porter · Comstock Publishing Company, inc.
364 sayfa · 1940
Galls (Botany) / Galles / Galles (botanique) / Insectes gallicoles / Relations insecte-plante
Felt, Ephraim Porter · University of the State of New York
84 sayfa · 1902
Grape-vine root-worm / Grapes / Diseases and pests
Felt, Ephraim Porter · University of the state of New York
34 sayfa · 1899
Insects / Collection and preservation