000 00349nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a131640887
082 _a1
082 _b64 S31
100 _a"Spencer, Richard H."
245 0 _aComputer Usability Testi
260 _aNew Jersey
260 _bP-H
260 _c1985
300 _a"xii, 224"
999 _c24758
_d24758