TY  - BOOK
AU  - Maguire,D.J.
AU  - Goodchild,Michael F.
AU  - Rhind,David
TI  - Geographical information systems: principles and applications 
SN  - 0582056616 (Longman : set)
U1  - 910.285 23
PY  - 1991/// [ Reprint 1993]
CY  - New York
PB  - Wiley
KW  - Geographic information systems
N1  - Vol. 1 Principles -- Vol. 2. Applications --
ER  -