TY  - BOOK
AU  - Haveman Robert H
AU  -  Knoff Kenyon A
TI  - Market systems
T2  - Introduction to Economic Series. Ed. by Kenyon A Knoff
SN  - 471 36185 2
U1  - X:51, K6;L0 
PY  - 1970///
CY  - New York
PB  - John Wiley        
KW  - Marketing
N1  - Appendix at the end of few chapters
ER  -