00369nam a2200181Ia 4500008004100000040000800041082000800049082000800057100001900065245001000084260001100094260001900105260000900124300001100133300001300144300001100157440001900168151201s9999    xx            000 0 und d  aeng  a510  bNOR  aNorton, F.G.J.  aMaths  aLondon  bPan books Ltd.  c1980  a221 p.  bdiagrams  c19 cm.  aPan study Aids