共 20 条
[1]
AJZEN I, 1996, 28C3753 CA USDA FOR
[2]
BALDARES C, 1991, 29 MICH STAT U AGR E
[4]
Carson R. T., 1989, Using surveys to value public goods: The contingent valuation method
[6]
COLE DN, 1995, INTRP483 USDA FOR SE
[8]
LUCAS RC, 1980, INT253 USDA FOR SERV
[10]
MCCOLLUM DW, 1999, 39 FORT COLL USDA FO