Geographic information systems an introduction
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Cyhoeddwyd: |
New York
Wiley
c1999.
|
| Rhifyn: | 2nd ed. |
| Pynciau: | |
| Mynediad Ar-lein: | http://www.loc.gov/catdir/toc/onix03/98038195.html |
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Cyhoeddwyd: |
New York
Wiley
c1999.
|
| Rhifyn: | 2nd ed. |
| Pynciau: | |
| Mynediad Ar-lein: | http://www.loc.gov/catdir/toc/onix03/98038195.html |