The National Geographic Magazine, Volume 83National Geographic Society, 1943 - Geography Indexes kept up to date with supplements. |
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Page 3
... nearly pure silica . If you wish a nine - inch length of tubing you start with a piece ten and a half inches long . It took six years of what inventor Charles F. Kettering calls the " shirt - losing stage " to perfect that kind of glass ...
... nearly pure silica . If you wish a nine - inch length of tubing you start with a piece ten and a half inches long . It took six years of what inventor Charles F. Kettering calls the " shirt - losing stage " to perfect that kind of glass ...
Page 30
... nearly one - fourth lighter than the old , an inch shorter , yet stronger . A quarter of a century ago the average life of a milk bottle was 20 to 22 trips . Now they make from 50 to 60 trips . That longer life is equivalent to making ...
... nearly one - fourth lighter than the old , an inch shorter , yet stronger . A quarter of a century ago the average life of a milk bottle was 20 to 22 trips . Now they make from 50 to 60 trips . That longer life is equivalent to making ...
Page 454
... nearly enough fertilizer for the greatest farm pro- duction in history . Mountains of Rations Roll on the Rails Farmers dispensed with about 12 million horses and mules after the motor truck came into general use . Now , because of tire ...
... nearly enough fertilizer for the greatest farm pro- duction in history . Mountains of Rations Roll on the Rails Farmers dispensed with about 12 million horses and mules after the motor truck came into general use . Now , because of tire ...
Contents
Aircraft Insignia Spirit of Youth By GERARD HUBBARD With 337 illustrations in color 710 | vi |
Coast Guard Patrol in Greenland 9 illustrations in color from naturalcolor photographs | xii |
Surinam Subjects of Queen Wilhelmina 13 illustrations in color from naturalcolor photo | xiii |
Copyright | |
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