Conservation of helium : hearings, 86th Congress, 2d session, on H.R. 10548 and S. 3376, June 1, and 15, 1960. - [Washington, D.C.], 1960. - iii, 94 p. : ill. Distribution made by issuing office. CRDP Program Historic Shelflist record. Subjects--Topical Terms: Helium--Law and legislation--United States. GPO Item No.: 1040 Gov. Doc. Class. No.: Y 4.IN 8/13:H 36/6