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| 2013, Vol. 1(1): 72-76 DOI: | ||
| Economic Analysis on Voluntary Environmental Agreements ——Based on a Theory of Enterprise Unilateral Joint Supply | ||
| SONG Yan | ||
| (School of Management, China University of Mining & Technology, Xuzhou 221116, China) | ||
| Received 2012-03-11 Revised 2013-01-22 | ||
| Supporting info | ||
| null | ||
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