Peel 4434: Taverner, Percy Algernon (1875-1947) [info]. Hawks of the Canadian Prairie Provinces in their relation to agriculture. Ottawa: Department of Mines, Geological Survey, 1918. .
Peel 4434: Taverner, Percy Algernon (1875-1947) [info]. Hawks of the Canadian Prairie Provinces in their relation to agriculture. Ottawa: Department of Mines, Geological Survey, 1918. .