00346nam a2200121 a 450000500170000000800410001702000140005805000230007210000190009524500620011426000320017665000160020820140414093849.0110718s19uu    xx            00    eng d  a978184565  aCDR 510bH318 2007  aHarrison, Paul  aAPEX maths :bword problems 6 extension /cPaul Harrison.  aLondon :bCambridge,c2006.  aMathematics