The National Geographic Magazine, Volume 91National Geographic Society, 1947 - Geography Indexes kept up to date with supplements. |
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Page 313
... developed and improved the magne- tron even further . Radar was " right down Bell men's alley . " Working in peacetime to improve the tele- phone , they had developed new gadgets and " know - how " that fitted into radar like pieces of ...
... developed and improved the magne- tron even further . Radar was " right down Bell men's alley . " Working in peacetime to improve the tele- phone , they had developed new gadgets and " know - how " that fitted into radar like pieces of ...
Page 316
... developed a soft rubber pad for the ear- pieces of telephone headsets which fitted tightly against the ears and cut down outside noise well enough to permit satisfactory hear- ing when there was no static on the radio . Such earpieces ...
... developed a soft rubber pad for the ear- pieces of telephone headsets which fitted tightly against the ears and cut down outside noise well enough to permit satisfactory hear- ing when there was no static on the radio . Such earpieces ...
Page 591
... developed a horde of animal life . Flesh eaters preyed on the eaters of plants and on one another . As death came , either through natural causes or from the struggle with tooth and claw , most of the remains were probably destroyed ...
... developed a horde of animal life . Flesh eaters preyed on the eaters of plants and on one another . As death came , either through natural causes or from the struggle with tooth and claw , most of the remains were probably destroyed ...
Contents
Hunting Folk Songs in the Hebrides By Margaret Shaw Campbell | 249 |
Become a Bakhtiari By Paul Edward Case | 325 |
In Manchuria Now By W Robert Moore | 389 |
Copyright | |
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