Population aged 15-24
Hours worked - total
Total hours worked
Maximum Sustainable Yield
Acid Precipitation
Precipitation
Precipitation-effectiveness Ratio
Full-time equivalent employment
Population Equivalent (in waste-water monitoring and treatment)
Climax System
Effluent Standards
Emission Standard
Short-term loans
Acid Rain
Date of birth
Date of occurrence
Drought
Washout
Bacterial Purity
Environmental Quality Standard
Sustainable Income
Drainage Basin
Storm Water
Appgar score
Sustainable catch
Age-specific fertility rates
Births by age group of mother
Age
Income
Short-term securities other than shares
Capacity of Treatment Installation
Carrying Capacity
Escherichia Coli (E. Coli)
Acid Deposition
Advanced Treatment Technology (waste water)
Climate
Deciduous Forest
Hydrologic Cycle
Rainwater
Sulphur Dioxide (SO2)
Water Cycle
Water resources
Weather
