سييرا نيفادا كوربوريشن: الفرق بين النسختين

| title = International Astronautical Congress 2009: Civilian Access to Space

| medium = video

| location = [[Daejeon, Korea]]

| url = http://www.flightglobal.com/blogs/hyperbola/2009/10/video-iac2009-civilian-access.html