TY  - BOOK
AU  - Obermeyer Nancy J
AU  -  Pinto Jeffrey K
TI  - Managing geogrpahic information systems
U1  - U:(D6,9(B), N4 
PY  - 1994///
CY  - New York
PB  - Gilford Press U S A     
KW  - Geography-Modern
ER  -