000			003360000a22001330004500
245			_aOres and minerals : introducing economic geology
100			_aBarnes, J.W.
260			_aMilton Keynes _bOpen University Press _c1988
300			_avi, 181p. : ill.
020			_a0335152139
080			_a553 _bB3
041			_aEN
942			_cBK
999			_c63065 _d63065