TY  - BOOK
AU  - Smith Edward E
AU  -  Medin Douglas L
TI  - Categories and concepts
T2  - Cognitive science series; 4
U1  - R299, M1-;1 (ER) 
PY  - 1981///
CY  - Cambridge
PB  - Harvard Univ Press     
KW  - PHILOSOPHY
ER  -