by Canada. Field Husbandry, Soils and Agricultural Engineering Division

1922

by Canada. Experimental Farms Service

1921

by Canada. Dominion Bureau of Statistics

1927

by Forest Pest Management Institute (Canada), Petawawa National Forestry Institute

1987 · IICA

by Canada

1922

by Canada. Experimental Farms Services

1915

by Canada. Department of Agriculture. Experimental Sub-Station (Beaverlodge, Alta.)

1925

by Board of Agriculture of Upper Canada

1859

by Canada. Department of Agriculture

1917

by Canada. Parliament. House of Commons. Select Standing Committee on Agriculture and Colonization

1919

by Canada. Department of Agriculture. Experimental Farms

1914

by Canada. Experimental Farms Service

1921