000			00922nam a22002177a 4500
001			sulb0065817
003			BD-SySUS
005			20160502153005.0
008			160502s1920 nyua 000 0 eng
040			_aDLC _cNcRS _dNcRS _dBD-SySUS
082			_222 _a622.42 _bBEM
100	1		_aBeard, James T. _q(James Thom), _d1855- _919411
245	1	0	_aMine gases and ventilation : _btextbook for students of mining, mining engineers and candidates preparing for mining examinations designed for working out the various problems that arise in the practice of coal mining, as they relate to the safe and effecient operation of mines / _cby James T. Beard.
250			_a2d ed., rev. and enl.
260			_aNew York : _bMcGraw-Hill, _cc1920.
300			_axii, 433 p. : _bfront., illus. ; _c32 cm.
650		0	_aMine ventilation. _919412
650		0	_aMine gases. _919413
650		0	_aCoal mines and mining. _919414
942			_2ddc _cBK
999			_c55942 _d55942