Science, Volume 109John Michels (Journalist) American Association for the Advancement of Science, 1883 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Page 53
... material over millions of years , al- structure to give a greater percent- è carbon , and storing it , so that we nt fossil fuels packaged as solids , coal to be shoveled and shipped in to be pumped and carried in tanks , flow easily ...
... material over millions of years , al- structure to give a greater percent- è carbon , and storing it , so that we nt fossil fuels packaged as solids , coal to be shoveled and shipped in to be pumped and carried in tanks , flow easily ...
Page 190
... material eaks at 4,480 Å , whereas the emission band of the exagonal material peaks at 4,330 Å ; ( 2 ) the hexag- al material has about four times the peak output both cathodo- and photoluminescence relative to e cubic material ; and ...
... material eaks at 4,480 Å , whereas the emission band of the exagonal material peaks at 4,330 Å ; ( 2 ) the hexag- al material has about four times the peak output both cathodo- and photoluminescence relative to e cubic material ; and ...
Page 636
... material less than about 35,000 years old . Such material includes , among other substances , buried soils , wood , charcoal , bone , and calcareous shells . If adequate amounts of this material are collected from horizons of accurately ...
... material less than about 35,000 years old . Such material includes , among other substances , buried soils , wood , charcoal , bone , and calcareous shells . If adequate amounts of this material are collected from horizons of accurately ...
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