TY  - BOOK
TI  - An introduction to geographical information systems / Ian Heywood, Sarah Cornelius, Steven Carver
SN  - 0131293176 (pbk.)
PY  - 2006///
CY  - Harlow, England; New York
PB  - Pearson Prentice Hall
KW  - Geographic information system
N1  - Includes bibliographical references (p. [400]-411) and index
ER  -