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United Nations Environment Programme[Desertification Control Bulletin Number 21, 1992: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 21, 1992: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Supplement to Number 10, 1984: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Supplement to Number 10, 1984: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control Bulletin Number 36, 2000: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 36, 2000: A Bulletin of World Events in the Control of Desertification Restoration of Degraded Lands and Reforestation

United Nations Environment Programme[Desertification Control: The Semi-annual Bulletin on Plans and Activities Volume 1 Number 2 December 1978]Desertification Control: The Semi-annual Bulletin on Plans and Activities Volume 1 Number 2 December 1978

United Nations Environment Programme[Desertification Control Bulletin Vol. 1 No. 1 June 1978]Desertification Control Bulletin Vol. 1 No. 1 June 1978

United Nations Environment Programme[Desertification Control Bulletin Number 11, December 1984 - A Bulletin of World Events in the Control of Deserts, Restoration of Degraded Lands and Reforestation]Desertification Control Bulletin Number 11, December 1984 - A Bulletin of World Events in the Control of Deserts, Restoration of Degraded Lands and Reforestation

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