TY  - BOOK
AU  - Walton Clarence
AU  -  Fells Richard Ed.
TI  - Business system :  Readings in ideas and concepts   
U1  - X9v58.N0, K7.1-.3 
PY  - 1967///
CY  - New York
PB  - Columbia University U.S.A.       
KW  - Industry Economics
ER  -