TY  - BOOK
AU  - Burrough,Peter A
AU  - McDonnell,Rache A
TI  - Princioples of geographical information system
U1  - 910.285 
PY  - 1997///
CY  - Oxford 
PB  - Oxford University Press
KW  - Geogrphy
N1  - Includes bibliographical refernces and index
ER  -