Keywords: Thor Agena B with Discoverer 18, Dec 7 1960 2.jpg Thor Agena B with Discoverer 18 satellite Dec 7 1960 Thor Agena B z satelitą Discoverer 18 7 grudnia 1960 Source http //www planet4589 org/space/images/lv/60018 html USAF via Johnatan's Space Page Thor Agena PD-USGov |