TY  - BOOK
AU  - Heywood, D. Ian.
TI  - An introduction to geographical information systems
SN  - 0582089409
PY  - 1998///
CY  - Upper Saddle River, N.J.
PB  - Prentice Hall
KW  - Carver, Steve
KW  - Cornelius, Sarah
KW  - Geographic information systems
N1  - Includes bibliographical references (p. 253-266) and index
ER  -