The National Geographic Magazine, Volume 90National Geographic Society, 1946 - Geography Indexes kept up to date with supplements. |
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Page 398
... Army Air Forces , 10th Weather Squadron , told me how he dropped weather men of the Army and Office of Strategic Services by parachute or flew them secretly to a makeshift landing field hidden in remote mountains , and kept them ...
... Army Air Forces , 10th Weather Squadron , told me how he dropped weather men of the Army and Office of Strategic Services by parachute or flew them secretly to a makeshift landing field hidden in remote mountains , and kept them ...
Page 400
... Army's new airdrome traffic - control device helps direct about 45 aircraft per hour to safe landings when visibility is poor . Girl locates planes in the air as they appear on the round radar scope or screen before her ( opposite page ) ...
... Army's new airdrome traffic - control device helps direct about 45 aircraft per hour to safe landings when visibility is poor . Girl locates planes in the air as they appear on the round radar scope or screen before her ( opposite page ) ...
Page 405
... Army P - 51D fighter during a test dive in which the airplane reached an air speed of approximately 640 miles per hour . As an airplane approaches the speed of sound ( 661 miles per hour at the temperature encountered at 40,000 feet ) ...
... Army P - 51D fighter during a test dive in which the airplane reached an air speed of approximately 640 miles per hour . As an airplane approaches the speed of sound ( 661 miles per hour at the temperature encountered at 40,000 feet ) ...
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