000			00415nam a2200157Ia 4500
003			UNSA
005			20221208115845.0
008			220920s9999||||xx |||||||||||||| ||und||
040			_aUNSA
100			_aMckinstry. Hugh Hinds. Norman _971116
245		0	_aMining geology
250			_a2da. ed.
260			_bPrentice-Hall,New York _aEstados Unidos de América _c1949
300			_a680 Paginás _c23x16
942			_cLIB
999			_c693793 _d693792