TY  - BOOK
AU  - Longley,Paul A.
TI  - Geographical information systems: principles, techniques, management and applications 
SN  - 0471735450
AV  - G70.212  .G464 2005
PY  - 2005///
CY  - Hoboken, NJ
PB  - John Wiley
KW  - Geographic information systems
N1  - Previous edition: 1999
ER  -