TY  - BOOK
AU  - Heywood,D.Ian
AU  - Cornelius,Sarah
AU  - Carver,Steve
TI  - An introduction to geographical information systems
SN  - 0131293176 (pbk.)
AV  - G70.212 .H49 2006
PY  - 2006///
CY  - Harlow, England, New York
PB  - Pearson Prentice Hall
KW  - Geographic information systems
ER  -