TY  - BOOK
AU  - Hansen Pierre and others
AU  -  Arnott Richard Ed.
TI  - Systems of cities and facility location:  A volume in the regional and urban economics section.   
T2  - Fundamentals of pure and applied economics
U1  - X:89k:(B), M7/SC 
PY  - 1987///
CY  - Chur
PB  - Harwood Academic Publishers        
ER  -