The National Geographic Magazine, Volumes 76-77National Geographic Society, 1940 - Geography Indexes kept up to date with supplements. |
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Page 176
... tire go farther and cost less . How much so is startling . Adult motorists recall when tires were guaranteed for 3,000 miles . Now they expect eight or ten times that mileage . Thirty years ago the average United States car owner's annual ...
... tire go farther and cost less . How much so is startling . Adult motorists recall when tires were guaranteed for 3,000 miles . Now they expect eight or ten times that mileage . Thirty years ago the average United States car owner's annual ...
Page 180
... tire , a rein- forcement following Nature's example of padding the soles of animals ' feet . Carbon black forms 30 per cent of this part of the tire , adding enormously to its wear . It takes a sizable tank to hold 4,500 cubic feet of ...
... tire , a rein- forcement following Nature's example of padding the soles of animals ' feet . Carbon black forms 30 per cent of this part of the tire , adding enormously to its wear . It takes a sizable tank to hold 4,500 cubic feet of ...
Page 182
... tire against the mold and welds the parts firmly together . Automatically the tire is removed from the mold , and the waterbag is extracted . " Whiskers " of overflow rubber are re- moved from the tire and it gets its " beauty treatment ...
... tire against the mold and welds the parts firmly together . Automatically the tire is removed from the mold , and the waterbag is extracted . " Whiskers " of overflow rubber are re- moved from the tire and it gets its " beauty treatment ...
Contents
Home Life and Industry in the Netherlands II illustrations in duotone from photographs | 271 |
History of Ancient Bridge Building and Road Making | 347 |
Italys Monuments Tell Romes Magnificence 8 illustrations from photographs 7 illus | 371 |
Copyright | |
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