National Resources Policy : hearings before the Committee on Interior and Insular Affairs, United States Senate, Eighty-first Congress, first session, on national resources policy. January 31, February 1, 2, 3, 4, and 7, 1949
National Resources Policy : hearings before the Committee on Interior and Insular Affairs, United States Senate, Eighty-first Congress, first session, on national resources policy. January 31, February 1, 2, 3, 4, and 7, 1949.