TY  - BOOK
AU  - Martin, David  .
TI  - Geographic information systems : socia-ecnomic applications / 
SN  - 0-415-12571-5
U1  - UOaBV 
PY  - 1996///
CY  - New York : 
PB  - Routledge , 
KW  - Geography - computer
ER  -