TY  - BOOK
AU  - Goodchild, Michael F., ed.
AU  - Maguire, David J., ed.
TI  - Geographical information systems: principles and applications
SN  - 0582056616
U1  - 910.285 21st ed.
PY  - 1991///
CY  - New York
PB  - John Wiley and Sons
KW  - Geographic information systems
KW  - Information storage system - Geography
N1  - V. 1:  Principles; Bibliography: p. 531-649 includes index
ER  -