000 00303nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a515
082 _b72 M37
100 _a"Maslov, V.P"
245 0 _aOperational Methods
260 _aMoscow
260 _bM.I.R
260 _c1973
300 _a559
999 _c22746
_d22746