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040 _cIAB
082 _aPER 371.334 COM 1989 V.13
245 0 _aComputers And Education 1989 Vol.13,No.1-4
260 _bPergamon Press.
_c1989
300 _aPEMBEKAL : AZIZUL INTERPRISE
942 _cBOOK
999 _c47429
_d47429