"USA." . . "International cooperation." . . "INTERNATIONAL COOPERATION." . "Outer space--International cooperation--Government policy--United States." . . "Spazio atmosferico (Diritto internazionale)" . . "Outer space" . . "Raumfahrt." . . "Cooperazione spaziale." . . . . "Internationale Kooperation." . . "Outer space--International cooperation." . . "Nutzung." . . "Weltraum." . . "Government policy." . . "OUTER SPACE." . . . . . . . . . . . . . . . . . . . . . . "Changing patterns of international cooperation in space" . . . . "United States." . . "UNITED STATES." .