1 農林水産省構造改善局, "農業構造改善補助事業実 績" 農林水産省 1996
2 東忠雄, "淡水養魚釣堀(附帶施設)施設計劃書" 錄村整備事業所 1996
3 Hanemann, W. M., "Welfare evaluations in contingent valuation experiments with discrete responses" 66 : 332-341, 1984
4 NOAA., "Report of the NOAA panel on contingent valuation" 58 : 4602-4614, 1993
5 Bishop, R. C., "Measuring values of extra-market goods: Are indirect measures biased?" 61 : 926-930, 1979
6 Freeman, A. M., "Measurement of Environmental and Resource Values: Theory and Methods" Resources for the Future 516-, 1993
7 DNR of Iowa, "Fishing Regulations" Iowa DNR 1996