TY - BOOK ID - 137610993 TI - Next step to Mars : deep space habitats : hearing before the Subcommittee on Space, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fourteenth Congress, second session, May 18, 2016. PY - 2017 PB - Washington : U.S. Government Publishing Office, DB - UniCat KW - Space colonies KW - Government policy KW - Mars (Planet) KW - Deep space KW - Exploration. KW - Research UR - https://www.unicat.be/uniCat?func=search&query=sysid:137610993 AB - ER -