Yazar
c gordon hewitt
30 cilt bulundu.
C. Gordon Hewitt · University Press
122 sayfa · 1912
Flies as carriers of disease / Housefly / Houseflies / Insect Vectors
C. Gordon Hewitt · University Press
296 sayfa · 1914
Housefly / Flies as carriers of disease / Flies / Muscidae / Mouches (Vecteurs de maladies)
C. Gordon Hewitt · C. Scribner's Sons
344 sayfa · 1921
Game protection / Game and game-birds / Conservation / Birds / Wildlife conservation
C. Gordon Hewitt · Cambridge University Press
404 sayfa · 2011
Flies as carriers of disease / Muscidae
C. Gordon Hewitt · Sine nomine
Sayfa sayısı yok · 1918
Control / Mice / Rats / Lutte contre les Rats / Lutte contre les Souris
C. Gordon Hewitt · H.M.S.O.
22 sayfa · 1912
Infectious Disease Transmission / Myiasis / Diptera / Insect Vectors
C. Gordon Hewitt · Ministère de l'agriculture
Sayfa sayısı yok · 1918
Control / Lutte contre les Rats / Rats / Mice / Lutte contre les Souris
C. Gordon Hewitt · Sine nomine
13 sayfa · 1908
Control / Tenthrède du mélèze / Mélèze / Larch / Larch sawfly
C. Gordon Hewitt · Sine nomine
11 sayfa · 1914
Control / Insect pests / Insectes nuisibles / Lutte contre les Insectes nuisibles
C. Gordon Hewitt · Ministère de l'agriculture
31 sayfa · 1912
Bee culture / Guides, manuels / Apiculture / Handbooks, manuals
C. Gordon Hewitt · Department of Agriculture
Sayfa sayısı yok · 1916
Conservation / Law and legislation / Birds / Birds, Protection of / Protection of Birds
C. Gordon Hewitt · Dominion of Canada, Department of Agriculture, Experimental Farms, Division of Entomology
42 sayfa · 1912
Kategori yok
C. Gordon Hewitt · Govt. Print. Bureau
11 sayfa · 1997
Agricultural pests / Control / Canada / Law and legislation / Canada. Destructive Insect and Pest Act
C. Gordon Hewitt · Govt. Print. Bureau
23 sayfa · 1992
Control / Agricultural pests / Insect pests / Law and legislation
C. Gordon Hewitt · Govt. Print. Bureau
32 sayfa · 1997
Control / Larch / Insect pests / Larch sawfly / Diseases and pests
C. Gordon Hewitt · J. de Labroquerie Taché
12 sayfa · 1917
Agricultural pests / Nursery stock / Insect pests / Control / Law and legislation
C. Gordon Hewitt · Govt. Print. Bureau
12 sayfa · 1997
Insect pests -- Control -- Law and legislation -- Canada. / Nursery stock -- Canada. / Agricultural pests -- Canada.