%0 Generic %T 1975 NASA authorization : index for hearings before the Committee on Science and Astronautics, U.S. House of Representatives, Ninety-third Congress, second session on H.R. 12689 (superseded by H.R. 13998) for parts 1, 2, 3, and 4. %U https://ezaccess.libraries.psu.edu/login?url=https://www.heinonline.org/HOL/Page?handle=hein.cbhear/nsfnasauid0001&id=1&size=2&collection=congrec&index=cbhear