TY - BOOK TI - On the Space Station and Prerequisites for the Human Exploration Program: Letter Report DO - 10.17226/12302 PY - 1993 UR - https://nap.nationalacademies.org/catalog/12302/on-the-space-station-and-prerequisites-for-the-human-exploration-program PB - The National Academies Press CY - Washington, DC LA - English KW - Space and Aeronautics ER -