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European agriculture and rural economy From personal observation
Progressive agriculture, 1916; tillage, not weather, controls yield
Women in agriculture, 1979-July 1987 : 277 citations
Your future herd. U. S. Department of agriculture
Chemistry in its application to agriculture and physiology
The birds of Ontario in relation to agriculture
Systematics in Agriculture Canada at Ottawa, 1886-1986
The new agriculture; or, The waters led captive
The apples of New York
Improvement of seeds and seed-grains. Evidence of James W. Robertson, Commissioner of Agriculture and Dairying, before the Select Standing Committee …