The National Geographic Magazine, Volume 81National Geographic Society, 1942 - Geography Indexes kept up to date with supplements. |
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Page 181
... known to be the gizzard stones of the great extinct and flightless bird known as the Moa ( Plate XX and page 182 ) . These huge birds some of them ten feet in height - may have existed until after the coming of man to the islands . This ...
... known to be the gizzard stones of the great extinct and flightless bird known as the Moa ( Plate XX and page 182 ) . These huge birds some of them ten feet in height - may have existed until after the coming of man to the islands . This ...
Page 461
... known -nearly twice as heavy as lead . Close rela- tives of platinum , they are used in pen points as the hard natural alloy called osmiridium . A few persons have metal in their skulls . A surgeon recently reported in the Jour- nal of ...
... known -nearly twice as heavy as lead . Close rela- tives of platinum , they are used in pen points as the hard natural alloy called osmiridium . A few persons have metal in their skulls . A surgeon recently reported in the Jour- nal of ...
Page 471
... known as magnesite and dolomite the Germans get their magnesium . The taking of Austria gave them one of the world's chief sources of mag- nesite . To match and eventually outstrip Ger- many's immense production of magnesium , vast ...
... known as magnesite and dolomite the Germans get their magnesium . The taking of Austria gave them one of the world's chief sources of mag- nesite . To match and eventually outstrip Ger- many's immense production of magnesium , vast ...
Contents
Sun Shines on San Diego 9 illustrations in color from naturalcolor photographs | 57 |
Taming Flood Dragons Along Chinas Hwang Ho River By OLIVER J TODD | 205 |
Alumina | 462 |
Copyright | |
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