The Encyclopedia Americana, Volume 7Grolier, 1995 - Encyclopedias and dictionaries |
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Page 142
C. L. CHRISTENSON , Indiana University Author of “ Economic Redevelopment in Bituminous Coal By the early 1970's natural gas supplied about 33 % of the total energy used in the United States , oil supplied about 43 % , while coal ...
C. L. CHRISTENSON , Indiana University Author of “ Economic Redevelopment in Bituminous Coal By the early 1970's natural gas supplied about 33 % of the total energy used in the United States , oil supplied about 43 % , while coal ...
Page 361
The three primary types of natural bustion also entered the later studies of Antoine fuels are coal , petroleum , and natural gas . Fuels Laurent Lavoisier ( discovery of oygen ) , Joseph manufactured from them include such gases as ...
The three primary types of natural bustion also entered the later studies of Antoine fuels are coal , petroleum , and natural gas . Fuels Laurent Lavoisier ( discovery of oygen ) , Joseph manufactured from them include such gases as ...
Page 619
With the advance of science and technology , combined with the tremendous population growth and improving standards of living , there have been vast changes in man's appraisal of natural resources . Today , more than 75 minerals are ...
With the advance of science and technology , combined with the tremendous population growth and improving standards of living , there have been vast changes in man's appraisal of natural resources . Today , more than 75 minerals are ...
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