00284nam a2200121Ia 4500082001700000100001700017245004200034260002800076300001400104500003400118500000500152700000500157  a516bL847.EC  aLoney, S. L.  aThe elements of coordinate geometryb  aLondonbMacmillanc1953  aix, 416p.  aPt.-1 : Cartesian coordinates  a  a