000 00270nam a22001337a 4500
999 _c168241
_d168241
082 _a
_b
100 _aBassham Gregory
245 _aOptical thinking/
_cby Bassham Gregory.
260 _a
_bTata,
_c2006.
300 _a
490 _a
650 _a
942 _cBK