000 00288nam a2200109Ia 4500
008 211228s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aChekhov, A.P.
245 0 _aComputer Workes: vol .7
260 _bNauka Pub
_aMoscow
_c1974
942 _c1
999 _c162661
_d162661