TY  - BOOK
AU  - Maguire, David J.,
AU  - Goodchild,Michael F.
AU  - Rhind, David W.
TI  - Geographical informations systems: Principles and applications 
SN  - 0470217892
AV  - G70.2 G47
PY  - 1991///-9999
CY  - New York
PB  - Longman Scientific & Technical
KW  - Sistemas geograficos de informacion
ER  -