Secondary activity
Secondary distribution of income account
Foetal death ratio
Parity progression ratio
Dependency ratios
Population sex ratio
Sex ratio at birth
Secondary supplier
Compaction Ratio
Coverage ratio
Dilution Ratio
Precipitation-effectiveness Ratio
Ratio estimation
Secondary Air Pollution
Secondary Radiation
Secondary Treatment
Lithosphere
Biogas
Cap Rock
Epilimnion
Quantity relative
Sampling fraction
Biosphere
Ionosphere
Stratosphere
Cost-benefit Analysis
Price relative
Counterpart reference area
Item response rate
Emission Factor
Tertiary Treatment
Growth rate
Rate
Analytical unit
Ancillary activity (2 definitions)
Disposable income
Other non-market producers
Biodiversity Indices
Ground-level Ozone
Radiation
Trophic Levels
Chloro-fluorocarbons (CFCs)
Fault
Water Cycle