000 00261nam a2200121Ia 4500
008 211209s1979 xx 000 0 und d
041 _aeng
082 _a515.33 N79 RAY
100 _aRAY M
245 _aDIFFERENTIAL CALCULUS
260 _c1979
300 _a398
999 _c11033
_d11033