00295nam a2200121Ia 4500008004100000082001500041100002000056245002300076260003900099300001100138942000700149999001700156190709s9999    xx            000 0 und d  a514.5 R424  aRickey, Frank A 0aPlane trigonometry  aNew yorkbRinehart and Winstc1964  aix,226  cBK  c37606d37606