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+title: proceedings of the ieee 1949 national aerospace and electronics conference naecon
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+title: proceedings of the ieee 1989 national aerospace and electronic conference naecon
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+title: proceedings of the ieee 1949 national aerospace and electronic conference naecon
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+title: proceedings of the ieee 1999 national aerospace and electronics conference naecon
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+title: proceedings of the ieee 1999 national aerospace and electronic conference naecon