000			00439cam a22001451 4500
082			_a552 _bBAR _cL-15,P-34.
100	1		_aBarth, Tom F. W. _940250
245	1	0	_aTheoretical petrology; _ba textbook on the origin and the evolution of rocks.
260			_aNew York, _bWiley _c[1952]
300			_a387 p. _billus. _c24 cm.
526			_a0 _b0 _c0 _d552_000000000000000_BAR
650		0	_aMCE _9379
650		0	_aPetrology. _940217
942			_2ddc _cBK
999			_c544655 _d544655