000			00305nam a2200109 4500
245			_aIntroduction to the structure of the earth _cEdgar W. Spencer
100			_aSpencer, Edgar W.
250			_a2nd ed.
260			_aTokyo _bMcGraw-Hill Kogakusha _cc1977
300			_ax,640p.;ill.; 24cm.
082			_a551.1 _bSPE
999			_c3567 _d3567