TY  - GEN
AU  - United Nations Environment Programme
PY  - 1991
SN  - 0379-2455
UR  - https://wedocs.unep.org/handle/20.500.11822/29021
LA  - English
KW  - desertification
KW  - topographic mapping
KW  - environmental degradation
KW  - reforestation
TI  - Desertification Control Bulletin: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation No. 19
M3  - Communication or other resource
ER  -