Clawson-knetsch method — One method for using travel costs to estimate the recreational value of a resource.

柯罗文-肯塔斯方法——一个用旅行成本来来评估资源娱乐价值的方法。

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Clawson-knetsch method — One method for using travel costs to estimate the recreational value of a resource.

柯罗文-肯塔斯方法——一个用旅行成本来来评估资源娱乐价值的方法。

youdao