TY - BOOK TI - Challenges to Astronomy and Astrophysics: Working Documents of the Astronomy Survey Committee DO - 10.17226/19437 PY - 1983 UR - https://nap.nationalacademies.org/catalog/19437/challenges-to-astronomy-and-astrophysics-working-documents-of-the-astronomy PB - The National Academies Press CY - Washington, DC LA - English KW - KW - Space and Aeronautics ER -