TY  - BOOK
AU  - Bingham,Robert C.
TI  - Economic concepts: a programmed approach
AV  - HB171.5 .B52 1969
U1  - 330/.077 
PY  - 1969///]
CY  - New York
PB  - McGraw-Hill
KW  - Economics
KW  - Programmed instruction
KW  - Local
ER  -