TY  - BOOK
AU  - Trockel Walter
TI  - Market demand
T2  - Lecture notes in economics and mathematical system. 223
SN  - 3540128816
U1  - X:731:(B), M4 
PY  - 1984///
CY  - Berlin
PB  - Springer Verlag         
KW  -  Economics
KW  - Demand
ER  -