For greener skies
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http://site.ebrary.com/lib/rucke/Doc?id=10051593
- An electronic book accessible through the World Wide Web; click to view
Includes bibliographical references.
Electronic reproduction. Palo Alto, Calif. : ebrary, 2009. Available via World Wide Web. Access may be limited to ebrary affiliated libraries.
This study was supported by the National Aeronautics and Space Administration under Contract No. NASW 99037
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