TY  - BOOK
AU  - Star Jeffrey
AU  -  Estes John
TI  - Geographic information systems:  An introduction   
U1  - U:(D6,9(B), N0 
PY  - 1990///
CY  - New Jersey 
PB  - Prentice Hall        
KW  - Geography-Modern
N1  - Bib p. 283-295,Glossary p. 261-277
ER  -