TY  - BOOK
AU  - Longley,Paul A.
AU  - Goodchild,Michael F.
TI  - Geographical information systems
SN  - 0471321826 (set)
AV  - G70.2  .G46 1999
PY  - 1999///
CY  - New York
PB  - John Wiley
KW  - Geographic information systems
ER  -