TY  - GEN
AU  - ROBBINS,P.P.
AU  - JOHN,A.TRIBBLE.
TI  - Study Guide for Introductory Economics
SN  - 0-669-09121-9
U1  - 330 GOR 
PY  - 1987///
CY  - New York
PB  - D.C.Heath and Company
ER  -