| |
| | reference (Site not responding. Last check: 2007-10-31) |
 | | Quest for Performance: The Evolution of Modern Aircraft |
 | | Taylor, John W. ed.: Jane's All the World's Aircraft, 1973-74 |
 | | Boyne, Walter J.; and Lopez, Donald S., eds.: |
| www.hq.nasa.gov /office/pao/History/SP-468/reference.htm (935 words) |
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