search query: @freeterm willingness to pay(WTP) / total: 2
references: 1-2 / 2
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title | year | author | ||
1. |
Journal of Environmental Management
2009 : AUG, VOL. 90:11, p. 3391-3400 |
2009 | Vásquez, W. F.(et al.) |
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2. |
Journal of Environmental Management
2008 : NOV, VOL, 89:3, p. 155-166 |
2008 | Bernath, K. Roschewitz, A. |
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