000			00292nam a2200109Ia 4500
008			241014s9999 xx 000 0 und d
020			_a9781498766241
082			_a624.193 _bCHA
100			_aChapman, David N
245		0	_aIntroduction to Tunnel Construction / _cChapman, David N
250			_a2nd Ed.
999			_c554 _d554