000 00281nam a2200121 a 4500
003 EIA
001 8403
942 _02
_2ddc
_cBK
245 _aExploring requirements :
_bquality before design
260 _c1989
008 141112s1989 ck r 000 u spa d
082 _a658.575
_bG274
999 _c5726
_d5726