TY  - BOOK
AU  - Dutton Geoffrey Ed.
AU  - International Advanced Study Symposium On Topclogical Data Structures For Geographic. Information Systems Massachusetts (1st) (1977)
ED  - International Advanced Study Symposium On Topclogical Data Structures For Geographic. Information Systems Massachusetts (1st) (1977)
TI  - Harvard paper on geographic information systems
T2  - "Harvard University, Laboratory For Computer Graphics And Spatial Analysis Publication"
U1  - "U:(B2893)p1,N77, L8.3" 
PY  - 1978///
CY  - Harvard
PB  - Harvard College      
KW  - Modern Geography
ER  -