000 00257nam a2200109Ia 4500
008 231212s1981 xx 000 0 und d
041 _aeng
082 _a621.37
100 _aMusakin A.
245 _aProblems in Quantative
260 _aMascow
_bMir Pub
_c1981
999 _c958479
_d958479