TY  - BOOK
AU  - Tomlin C. Dana
TI  - Geographic information systems and cartographic mo
U1  - U:(D6,9(B), N0 
PY  - 1990///
CY  - New Jersey 
PB  - Prentice Hall        
KW  - Geography-Modern
N1  - Bib p. 226-227,Appendix p.228-241
ER  -