Strategic and Critical Materials (Guayule Rubber). hearings before the United States Senate Committee on Military Affairs, Seventy-Seventh Congress, first session, on Dec. 10, 1941. <Part 1> :

Considers legislation to authorize planting 45,000 acres of guayule as a source of rubber for emergency and defense uses. Includes the transcript of June 14, 1940, hearing on S. 4082, 76th Cong., 3d sess., relating to the defense of the U.S. and other nations in the Western Hemisphere (p. 41-73).