TY  - BOOK
AU  - Ruffin,Roy
AU  - Gregory,Paul R.
TI  - Principles of economics
SN  - 0673460207
AV  - HB171.5 .R82 1990
U1  - 330 22
PY  - 1990///
CY  - Glenview, Ill.
PB  - Scott, Foresman/Little, Brown Higher Education
KW  - Economics
N1  - Includes bibliographical references and indexes
ER  -