 |
| |||
| observational study | |||
| nonexperimental study | |||
| |||
| Observational study | |||
| |||
| Non-experimental study | |||
| étude d 'observation: 3 phrases in 3 subjects |
| Construction | 1 |
| Health care | 1 |
| Natural sciences | 1 |
|
| |||
| observational study | |||
| nonexperimental study | |||
| |||
| Observational study | |||
| |||
| Non-experimental study | |||
| étude d 'observation: 3 phrases in 3 subjects |
| Construction | 1 |
| Health care | 1 |
| Natural sciences | 1 |