UNDERSTANDING THE NEW U.S. NATIONAL SPACE POLICY，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA

THE UNITED STATES AND HUMAN SPACE EXPLORATION，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA 在北大的讲座资料

UNDERSTANDING THE NEW U.S. NATIONAL SPACE POLICY，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA-UNDERSTANDING THE NEW

THE UNITED STATES AND HUMAN SPACE EXPLORATION，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA 在北大的讲座资料-THE UNITED ST