TY  - BOOK
AU  - Sweet, David C
TI  - Models of urban structure
SN  - 0-669-61366-5
U1  - 711.4 
CY  - London
PB  - D.C heath and company
KW  - MCE
N1  - 0; 0; 0; 711_400000000000000_MOD
ER  -