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Submissions from 2002

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2002 SUX Airport Planning, Henry Lehrer

Submissions from 1997

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Airport Day 1997 Memo 1: NASA Aeronautics Day, Henry Lehrer Ph.D.

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Airport Day 1997 Memo 2: NASA Aeronautics Day, Henry Lehrer Ph.D.

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Teacher Letter from Aviation Institute, Henry R. Lehrer Ph.D.