TY  - BOOK
AU  - Ruffin,RoyJ.
AU  - Gregory, Paul R.
TI  - Principles of microeconomics
SN  - 0673188825
U1  - 338.5/R923p 
PY  - 1968///
CY  - Illinois; London
PB  - scott,Foresman
KW  - Microeconomics
KW  - Microeconomiocs
N1  - Includes
ER  -