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3. Plastic pollution in the world’s oceans: more than 5 trillion plastic pieces weighing over 250,000 tons afloat at sea;M Eriksen;PLOS ONE,2014
4. Plastic debris in the open ocean;A Cozar;PNAS,2014
5. Microplastic resin pellets on an urban tropical beach in Colombia;I Acosta-Coley;Environmental Monitoring and Assessment,2014