00410nam a22001337a 4500008004100000020001800041082000800059245005300067260005500120300001000175440003300185500002400218650003400242190507b        xxu||||| |||| 00| 0 eng d  a9780199138265  a500  aGCSE additional science:bhigher workbook/cGCSE  aOxford, New York:bOxford University Press,c2011.  a150p.  aTwenty First Century Science  aIncludes appendices  aChemicals and the environment