Online Books by
John C. Holtz
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Holtz, John C.: Diesel engines underground. [Part] III, Effect on exhaust-gas composition of operating engines in mixtures of normal air and natural gas (U.S. Dept. of the Interior, Bureau of Mines, 1941), also by H. H. Schrenk, L. B. Berger, and Martin A. Elliott (page images at HathiTrust)- Holtz, John C.: Effect of adding exhaust gas to intake air (U.S. Dept. of the Interior, Bureau of Mines, 1940), also by H. H. Schrenk, M. A. Elliott, and L. B. Berger (page images at HathiTrust)
- Holtz, John C.: Effect of sulfur content of fuel on consumption of exhaust gas (U.S. Dept. of the Interior, Bureau of Mines, 1943), also by H. H. Schrenk, M. A. Elliott, and L. B. Berger (page images at HathiTrust)
- Holtz, John C.: Effects of sheaths on gaseous products from permissible explosives (U.S. Dept. of the Interior, Bureau of Mines, 1943), also by A. R. T. Denues, A. P. Rowles, and E. J. Murphy (page images at HathiTrust)
- Holtz, John C.: Safety with mobile diesel-powered equipment underground (U.S. Dept. of the Interior, Bureau of Mines, 1960) (page images at HathiTrust)
- Holtz, John C.: Some factors affecting test results (U.S. Dept. of the Interior, Bureau of Mines, 1940) (page images at HathiTrust)
- Holtz, John C.: Use of diesel locomotives in construction of the Delaware Aqueduct (United States Bureau of Mines, 1947), also by H. H. Schrenk, M. A. Elliott, and L. B. Berger (page images at HathiTrust)
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