TY - BOOK ED - United States. TI - Conservation of helium: hearings, 86th Congress, 2d session, on H.R. 10548 and S. 3376, June 1, and 15, 1960 PY - 1960/// CY - [Washington, D.C.] KW - Helium KW - Law and legislation KW - United States N1 - Distribution made by issuing office; CRDP Program Historic Shelflist record ER -