%0 Book %T Planetary Astronomy: An Appraisal of Ground-Based Opportunities %D 1968 %U https://nap.nationalacademies.org/catalog/12404/planetary-astronomy-an-appraisal-of-ground-based-opportunities %> https://nap.nationalacademies.org/catalog/12404/planetary-astronomy-an-appraisal-of-ground-based-opportunities %I The National Academies Press %C Washington, DC %G English %K Space and Aeronautics %P 86 %R doi:10.17226/12404