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United Nations Environment Programme[Desertification Control Bulletin Number 33, 1998: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 33, 1998: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 17, 1988: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 17, 1988: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 34, 1999: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 34, 1999: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 31, 1997: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 31, 1997: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 35, 1999: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 35, 1999: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 29, 1996: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 29, 1996: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 14 1987: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 14 1987: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 15, 1987: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 15, 1987: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Number 6, April 1982: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Number 6, April 1982: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

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