共 29 条
[1]
[Anonymous], CONTINGENT VALUATION
[6]
Carson R. T., 1989, Using surveys to value public goods: The contingent valuation method
[7]
CARSON RT, 1996, CONTINGENT VALUATION
[8]
CLARK HH, 1992, QUESTIONS QUESTIONS
[10]
Converse P. E., 1970, QUANTITATIVE ANAL SO