Production of Atmospheric Nitrogen: Hearing Before the Committee on Agriculture and Forestry, United States Senate, Sixty-sixth Congress, Second Session, on S. 3390, a Bill to Provide Further for the National Defense; to Establish a Self-sustaining Federal Agency for the Manufacture, Production, and Development of the Products of Atmospheric Nitrogen for Military, Experimental, and Other Purposes; to Provide Research Laboratories and Experimental Plants for the Development of Fixed-nitrogen Production; and for Other Purposes, [March 22, April 8, 9, 10, 12, 13, 20, 21, 27, 28, 1920].
United States. Congress. Senate. Committee on Agriculture and Forestry