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The rhizosphore and plant growth : information, program, and abstract : May 8-11, 1989 Beltsville Agricultural Research Center, Agricultural Research…
How crops grow. A treatise on the chemical composition, structure and life of the plant, for students of agriculture. With numerous illustrations and…
Report of the Secretary of Agriculture on the southern Appalachian and White Mountain watersheds. Commercial importance, area, condition, advisabilit…
Six months' residence and travels in Mexico : containing remarks on the present state of New Spain, its natural productions, state of society, manufa…
[Silver maple (Acer dasycarpum), Red Swamp maple (Acer rubrum) seeds for planting] : [letter, dated June 1, 1931, and addressed to the U. S. Departme…
[List of trees for sale : letter dated 11-1916 from S.T. Burns to the U. S. Department of Agriculture with explanation that he was not a regular nurs…
Facsimiles of letters from His Excellency George Washington, President of the United States of America to Sir John Sinclair, bart., M. P. on agricult…
A descriptive catalogue of the grasses of the United States, including especially the grass collections at the New Orleans exposition made by the U. …
Forestry in the United States ... Address of the Hon. Geo. B. Loring, U. S. commissioner of agriculture, before the American forestry congress, Saint…
