000 00294nam a2200121Ia 4500
008 151213s9999 xx 000 0 und d
245 _aA Step-by-Step Approach
260 _aGray .NC. USA
_bSAS Institution
_c1996
300 _a3003 p.
650 _aComputer
650 _aComputer
999 _c2090
_d2090