value of ecological service function
Characteristic value of of natural nodule
ecological service value
integrated value of ecological risk
keeping and increasing of value of assets
quantity of value of the goods
return of value of agriculture
service value of forest ecosystem
theory of value of goods
Traceability of Value of a Quantity
Value of service pricing
Value-of-service pricing
length of service of episode
payment of ecological service
(Absolute) Value of Fuzzy Number
a system of value concepts