00315nam a2200109Ia 4500008004100000082001900041100002300060245004600083260002700129300001000156490003900166260320b        |||||||| |||| 00| 0 eng d  a519.3bR912.GG  aRuckle, William H.  aGeometric games and their applicationsb/  aBoston:bPitman,c1983  a187p.  aResearch notes in Mathematicsv 82