000 00269nam a2200121Ia 4500
008 211209s1975 xx 000 0 und d
041 _aeng
082 _a515.62 N75 MAR
100 _aMARKUSHEVICH A I
245 _aRECURSION SEQUENCES
260 _c1975
300 _a48
999 _c15238
_d15238