000 00263nam a2200109Ia 4500
008 231109s9999 xx 000 0 und d
020 _a967-69-0339-6
090 _aLB 1594.M722 1999
100 0 _aMOKHTAR AHMAD
245 0 0 _aUNIT SISTEM
260 _bTHINKERS'S LIBRARY
999 _c4573
_d4573