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United Nations Environment Programme ,  [State of the Marine Environment in the Mediterranean Region: UNEP Regional Seas Reports and Studies no. 132] ,  State of the Marine Environment in the Mediterranean Region: UNEP Regional Seas Reports and Studies no. 132

United Nations Environment Programme ,  [Long-term Programme for Pollution Monitoring and Research in the Mediterranean (MED POL) - Phase II - Regional Seas Reports and Studies No. 028 Rev. 1] ,  Long-term Programme for Pollution Monitoring and Research in the Mediterranean (MED POL) - Phase II - Regional Seas Reports and Studies No. 028 Rev. 1

United Nations Environment Programme ,  [Marine litter: a global challenge] ,  Marine litter: a global challenge