000 00284nam a2200121Ia 4500
008 211209s1979 xx 000 0 und d
041 _aeng
082 _a516PED
100 _aPEDOE D
245 _aCIRCLES A MATHEMATICAL VIEW
260 _bDOVERPUBLICATIONS INC.
_c1979
300 _a96
999 _c19030
_d19030