Contents: The Amazing Air Cycle; How Apollo 13 will probe the Moon's interior by Wernher von Braun; Engineering the new mechanical heart; We hit the RV Trail!; A Patio Table with new ideas; Now the Wankel is ready for you future car; Vacation Homes you can buy by mail; The Crazy, Tricky, wonderful sport of Island-Hopping; more
1970 March Popular Science Magazine Back-Issue available at www.DadsVintageAds.com
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