TY  - BOOK
AU  - Ulmer Gregory L
TI  - Heuretics :  The logic of invention
SN  - 0801847184
U1  - R17(T:3,4), N4 
PY  - 1994///
CY  - London
PB  - Johns Hopkins University Press Gt. Brit.   
KW  - PHILOSOPHY
ER  -