000			00265nam a2200109 4500
999			_c336752 _d336752
082			_a551 _bDUF.H
100			_aDuff, P.Mcl.D.
245			_aHolmes Principles of Physical Geology _cDuff, P.Mcl.D.
250			_aFourth
260			_aSingapore _c1992 _bELBS
942			_cBK