000 00288nam a2200121Ia 4500
008 220201s1979 xx 000 0 eng d
082 _bSOR
100 _aSorensen Rohert James
245 0 _aDesing accessibility
260 _aNew York
_bMc graw Hill
_c1979
300 _a264
942 _2ddc
999 _c23626
_d23626