Yazar
Morley Pettit
5 cilt bulundu.
Cilt sonuçları
Bee-keeping in Ontario
Morley Pettit · Dept. of Agriculture
Sayfa sayısı yok · 1997
Bee culture / Bees / Wintering / Hibernation / Abeilles
The wintering of bees in Ontario
Morley Pettit · Ontario Dept. of Agriculture
17 sayfa · 1997
Bee culture / Bees / Wintering / Hibernation / Abeilles
Natural swarming of bees and how to prevent it
Morley Pettit · Creative Media Partners, LLC
12 sayfa · 1997
Bee culture / Bees / Swarming / Essaimage / Apiculture
Some results of co-operative experiments on races of bees to determine their power to resist European foul brood
Morley Pettit · L.K. Cameron
Sayfa sayısı yok · 1997
Bees / Diseases / European Foul brood / Foul brood, European