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United Nations Environment Programme ,  [Industrial Sources of Marine and Coastal Pollution in the East African region: UNEP Regional Seas Reports and Studies No. 7] ,  Industrial Sources of Marine and Coastal Pollution in the East African region: UNEP Regional Seas Reports and Studies No. 7

United Nations Environment Programme ,  [Reactive nitrogen in the environment] ,  Reactive nitrogen in the environment

United Nations Environment Programme ,  [Africa Environment Outlook 3: our environment, our health] ,  Africa Environment Outlook 3: our environment, our health

United Nations Environment Programme ,  [Final evaluation of the assessment of the pollution status and vulnerability of the water supply aquifers of African cities] ,  Final evaluation of the assessment of the pollution status and vulnerability of the water supply aquifers of African cities