000 00322nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a620
082 _b112 M6
100 _a"Mirolyubov, I N et.al."
245 3 _aAn Aid To Solving Proble
260 _aMoscow
260 _bMIR Pub.
260 _c1977
300 _a477
999 _c23081
_d23081