TY  - BOOK
AU  - Ruffin,Roy J.
AU  - Gregory,Paul R.
TI  - Principles of Microeconomics
SN  - 0673460223
U1  - 338.5 
PY  - 1989///
CY  - New York
PB  - Harper Collins College Publishers
KW  - Economics
N1  - Includes Index
ER  -