TY  - BOOK
AU  - 
AU  - Gruber, Howard E., Terrell, Glenn And Wertheimer, Michael
TI  - Contemporary approaches to creative thinking: a symposium held at the university of colorado
U1  - 155.3 
PY  - 1962///
CY  - New York
PB  - Prentice-Hall
KW  - Creative thinking
ER  -