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A study of the cracking of the tar vapors and of the gas from the low temperature carbonization of coal ...Crawford, Thomas Stephen, January 1931 (has links)
Thesis (Ph. D.)--Columbia University, 1931. / Vita. "Authorized preprint from copyrighted articles in Gas age-record, volume 68, numbers 5, 6, and 7, August 1, 8, and 15, 1931." Bibliography: p. 35.
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