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Supertopics:
Recycling Plastic
Types of Plastic

The Seven Plastic Resin ID Codes (for Recycling)

Subtopics:
webYale Environment 3602020-02-18
webJohn HocevarGreenpeace2020-02-18
webOld Farmers Almanac2015-04-20
webGreg SeamanEarthEasy2012-05-02