TY  - BOOK
AU  - Robinove,Charles Joseph
TI  - Principles of logic and the use of digital geographic information systems
U1  - 025.0691 
PY  - 1986///
CY  - Washington
PB  - United States Government Printing Office
KW  - Geography
KW  - Data processing
N1  - Bibliography: p. 19
ER  -