TY  - BOOK
AU  - Ruffin,Roy
AU  - Gregory,Paul R.
TI  - Principles of economics
SN  - 067318871X
AV  - HB171.5 .R82 1988
U1  - 330 19
PY  - 1988///
CY  - Glenview, Ill.
PB  - Scott, Foresman
KW  - Economics
KW  - Local
N1  - Includes bibliographies and index
ER  -