Ulf Helldén
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- 1992
-
Mark
Estimation of the forest cover and its changes over time by means of remote sensing in semi-arid Africa.
1992) p.47-68(
- Chapter in Book/Report/Conference proceeding › Book chapter
- 1991
-
Mark
Rapport från ett internationellt möte om ökenspridning
(
- Contribution to journal › Article
-
Mark
Desertification-Time for an Assessment?
(
- Contribution to journal › Article
- 1988
-
Mark
National Drought Impact Monitoring- A NOAA NDVI and precipitation data study of Ethiopia
1988) In Lund Studies in Geography, Ser. C. General, Mathematical and Regional Geography(
- Book/Report › Report
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