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