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Improvement of seeds and seed-grains. Evidence of James W. Robertson, Commissioner of Agriculture and Dairying, before the Select Standing Committee …
One hundred lessons in agriculture, with practical problems
First principles of agriculture. By Edward V. Voorhees
Energy consumption by forestry and agriculture in Montana
A text book of the physics of agriculture
Soils and plant life as related to agriculture
Address of D. F, Houston, secretary of agriculture
Chemistry in its applications to agriculture and physiology
Progress in agriculture by education and government aid
Some common birds in their relation to agriculture