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- [6] UNITED-STATES AEROSPACE INDUSTRY AT CROSSROADS ASTRONAUTICS & AERONAUTICS, 1973, 11 (11): : 44 - 51
- [9] UNITED-STATES PATENT REQUIREMENTS IN VITRO-JOURNAL OF THE TISSUE CULTURE ASSOCIATION, 1981, 17 (12): : 1084 - 1085
- [10] WILL THE UNITED-STATES HAVE THE NEEDED AEROSPACE WORKFORCE ASTRONAUTICS & AERONAUTICS, 1981, 19 (09): : 18 - 19