| |||
| derivative action; differential action; rate action; D action | |||
|
Differentialwirkung : 4 phrases, 1 sujets |
| Communications | 4 |
| |||
| derivative action; differential action; rate action; D action | |||
|
Differentialwirkung : 4 phrases, 1 sujets |
| Communications | 4 |