TY  - BOOK
AU  - Ruffin,Roy J.
AU  - Gregory, Paul R.
TI  - Principles of microeconomics
SN  - 0673460223
AV  - HB172  .R75 1990
U1  - 338.5 22nd ed.
PY  - 1989///
CY  - London
PB  - Little Brown Higher Education
KW  - Microeconomics
N1  - Includes bibliographical references
ER  -