TY  - BOOK
AU  - Symposium on Theoretical Approaches to Non Numerical Problem Solving, Case Western Reserve University, Ohio, Nov. 19-20, 1968
AU  - Banerji, R. B. ; ed.
AU  - Mesarovic, M. D.
TI  - Theoretical approaches to non numerical problem solving: ; proceedings of the IV systems symposium 
U1  - 518.1 
PY  - 1970///
CY  - Berlin
PB  - Springer-Verlag
ER  -