00288nam a2200121Ia 4500082001900000100001900019245002800038260003300066300001900099490003800118500000500156700000500161  a512.7bM834.DE  aMordell, L. J.  aDiophantine equationsb  aLondonbAcademic Pressc1969  ax, 312p. Bibl.  aPure and Applied Mathematicsv 30  a  a