TY  - BOOK
AU  - Cercone, Nick
AU  - McCalla, Gordon
TI  - Knowledge frontier : essays in the representation of knowledge
T2  - Springer series symbolic computation
SN  - 0387965572
U1  - 006.33 
PY  - 1987///
CY  - New York
PB  - Springer-Verlag
ER  -