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Old 11-17-2009, 10:04 AM
Alferd Alferd is offline
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Join Date: Nov 2009
Posts: 22
Default Re: Contrails cannot form into clouds (proof!)

Quote:
Originally Posted by stompk View Post
Translation. They have been using the airline industry for a long time.

Well based on that photo from WWII, it would be a long time indeed.
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