000			00334nam a2200133Ia 4500
008			160306s9999 xx 000 0 und d
020			_a0809456702
080			_a681.14 _bCOM
245			_aComputer security
260			_c1986 _aChicago _bTime-Life Books
300			_a2 128p.
500			_aUnderstanding computers
942			_cBK _2udc
999			_c35412 _d35412