000			00380nam a2200145Ia 4500
008			140317s9999 xx 000 0 und d
082			_a553.2
100			_aMarshall,C.E.
245			_aThe nature and origin of coal , coal seams.
260			_aLondon _bEnglish Universities Press _c1952
300			_a282
650			_aGeology , Mines
700			_aRaistrick,A.
942			_2ddc _cBK
999			_c1447 _d1447