000			00448nam a2200157Ia 4500
008			191210s9999||||xx |||||||||||||| ||und||
020			_a899742404
040			_ben.
050			_bG 73
080			_a519.6
245		0	_aError-Free computation : _bWhy it is needed and methods for do it / _cRobert Todd Gregory
250			_a1a. ed.
260			_aNew York : _bKrieger Publishing Company, _c1980
300			_a152 p. : _bv ; _c27 cm.
942			_cBK
999			_d2719 _c2719