00311nam a2200121Ia 4500008004100000082001500041100002900056245002400085260004300109300001300152942000700165999001700172190709s9999    xx            000 0 und d  a516.5 E183  aEisenhart, Luther Pfahle 0aCoordiante geometry  aNew yorkbDover publications Incc1960  ax,297,15  cBK  c36859d36859