dual - econ
- dual consciousness
- dual economy
- dual labour-market
- dual-career marriage
- dual-earner families
- dualism
- dualism, economic
- dualistic
- dummy variable
- dummy variables
- duopoly
- Durkheim
- Durkheim, Émile
- dyad
- dynamic density
- dysfunction
- ecological competition
- ecological fallacy
- ecological invasion
- ecological succession
