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United Nations Environment Programme ,  [Achievements and Planned Development of UNEP's Regional Seas Programme and Comparable Programmes Sponsored by Other Bodies - UNEP Regional Seas Reports and Studies No. 001] ,  Achievements and Planned Development of UNEP's Regional Seas Programme and Comparable Programmes Sponsored by Other Bodies - UNEP Regional Seas Reports and Studies No. 001

United Nations Environment Programme ,  [Marine litter, an analytical overview] ,  Marine litter, an analytical overview

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