000 00268nam a22000977a 4500
082 _a612.8
_bSCI
100 _aScientific American
245 _aPerception
_b: Mechanisms & Models /
_cScientific American
260 _aSan Fransisco
_bW H Freeman & Co
_c1972
942 _cBK
999 _c498839
_d498839