TY  - BOOK
AU  -  Ruffin, Roy 
AU  -  Gregory, Paul R.
TI  - Principles of economics
SN  - 0673155080
U1  - 330 
PY  - 1983///
CY  - Glenview Ill
PB  -  Scott, Foresman, 
KW  - Economics
N1  - Include Index
ER  -