000 00291nam a2200121Ia 4500
008 211209s1971 xx 000 0 und d
041 _aeng
082 _a515.45 N71 PET
100 _aPETROVSKY I G
245 _aLECTURES ON THE THEORY OF INTEGRAL EQUATION
260 _c1971
300 _a135
999 _c10997
_d10997