000 00292nam a22001217a 4500
008 181019b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a159.9
100 _a48
101 _aPSI
245 _aConcept Learning: An Information Processing Problem
_cHunt,E.B
942 _2udc
_cBK
999 _c50188
_d50188