Harper's Magazine, Volume 248Henry Mills Alden, Thomas Bucklin Wells, Lee Foster Hartman, Frederick Lewis Allen Harper & Brothers, 1974 - American literature |
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Page 82
... energy source was the food he ate , namely plants and animals . As an energy source , wood was used almost exclusively until about three hundred years ago , years ago , when coal started becoming popular . By the middle of the last ...
... energy source was the food he ate , namely plants and animals . As an energy source , wood was used almost exclusively until about three hundred years ago , years ago , when coal started becoming popular . By the middle of the last ...
Page 111
... Energy , Ecology , and Economics I know something's up when two different people urgently send me fourth - generation xeroxes of the same article , which they did with this paper that Howard Odum prepared in 1973 for the Royal Swedish ...
... Energy , Ecology , and Economics I know something's up when two different people urgently send me fourth - generation xeroxes of the same article , which they did with this paper that Howard Odum prepared in 1973 for the Royal Swedish ...
Page 3
... energy in the U.S. - has noted : There is no gamble in solar energy use ; it is sure to work . It has been demonstrated that solar energy will heat , cool , con- vert salt water into fresh water , and generate power and elec- tricity ...
... energy in the U.S. - has noted : There is no gamble in solar energy use ; it is sure to work . It has been demonstrated that solar energy will heat , cool , con- vert salt water into fresh water , and generate power and elec- tricity ...
Contents
WRAPAROUND | 5 |
AN INSTRUMENT OF REGENERATION | 14 |
Frank Sartwell | 24 |
Copyright | |
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