Flux (in nuclear science)
Tertiary Treatment
Agronomy
Cybernetics
Ethology
Eugenics
Microbiology
Biodiversity Convention
Semantics
Compilation of vital statistics data
Repatriating refugees
Education level
Ekistics
Debt-for-nature Swap
Environmental Impact Assessment (EIA)
Environmental Impact Statement
UNEP
Cost-benefit Analysis
Computer software
Objectives
Official statistics
Hydrology
Timeliness in register-based vital statistics
Entertainment, literary or artistic originals
Secondary Treatment
Earthwatch
World Conservation Strategy