TY  - BOOK
AU  - Davis, J. Ronnie Davis
AU  - Chang, Semoon 
TI  - Principles of Managerial Economics 
U1  - 338.5024658/D261p 
PY  - 1986///
CY  - New Jersey
PB  - Prentice-Hall Inc 
KW  -  
KW  - Managerial Economics
ER  -