TY - BOOK ED - United States. TI - In-space propulsion: strategic choices and options : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fifteenth Congress, first session, June 29, 2017 PY - 2017/// CY - Washington PB - U.S. Government Publishing Office KW - Space vehicles KW - Propulsion systems KW - Technological innovations KW - United States KW - Legislative hearings KW - lcgft N1 - "Serial no. 115-20."; Shipping list no.: 2018-0030-M; CRDP Program record; Includes bibliographical references; Microfiche; [Washington, D.C.]; U.S. Government Printing Office; [2018]; microfiche : negative ER -