search query: @freeterm voluntary programs / total: 2
references: 1-2 / 2
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title | year | author | ||
1. |
Journal of Environmental Economics and Management
2009 : NOV, VOL. 58:3, p. 253-265 |
2009 | Cutter, W.B. Neidell, M. |
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2. |
Journal of Environmental Economics and Management
2009 : MAR, VOL. 57:2, p. 166-181 |
2009 | Brouhle, K. Griffiths, C. Wolverton, A. |
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