ecological systems
| theory
| ecological system | |
| health. | ökologisches System |
| theories | |
| gen. | Theorien |
| theory | |
| gen. | theorie |
| arts. | Theorie |
| earth.sc. el. | Berechnung |
| ed. | Grundlagen |
| emerg.care | Theorie |
| med. | Hypothese |
| |||
| ökologisches System | |||
| Ökosystem n | |||
|
ecological systems : 2 phrases in 2 subjects |
| Business | 1 |
| Education | 1 |