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Art.blog.Tuesday, April 5, 2011. Sculpture Project 3: Thoughts. The items that I brought in were a Polaroid Land Camera 250 and a Selmer B ♭. Thursday, March 17, 2011. Sculpture Project 2: Mould-making. Cast Wax and Silkscreen. Emissions Trading (also known as cap and trade) is a market-based approach to control pollution by providing economic incentives for achieving reductions in the emissions of pollutants. Experience with Market-Based Environmental Policy Instruments". Stavins, Robert N. (November 2001).
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