共 49 条
[1]
*ACR INT LTD, 1989, EFF SOC COSTS FOSS F
[2]
[Anonymous], ASSESSING ENV EXTERN
[5]
CHESTNUT LG, 1988, EPA2301088042
[6]
CROPPER ML, 1989, AERE WORKSH EST VAL
[7]
Desvousges W. H., 1994, ASSESSING ENV EXTERN
[9]
DICKIE M, 1988, UNPUB CONTINGENT VAL