TY  - BOOK
AU  - Robinson, R.
TI  - Study guide to a company sumuelsion Economics
SN  - 0070532710
AV  - HB 171.5.R6 1980 
PY  - 1980///
CY  - Newyork
PB  - McGrawhill nbook company
KW  - Economics - problems - exercises
ER  -