TY  - BOOK
AU  - Bingham,Robert C., x
AU  - x
TI  - Economic concepts: A programmed approach
SN  - x
U1  - 330.1/B613e 
PY  - 1981///
CY  - New York ; London
PB  - McGraw-Hill
KW  - Economics
N1  - x
ER  -