| |||
| nitrogen-phosphorus ratio; N/P ratio | |||
|
phosphore relation azote : 3 phrases in 1 subject |
| Natural resourses and wildlife conservation | 3 |
| |||
| nitrogen-phosphorus ratio; N/P ratio | |||
|
phosphore relation azote : 3 phrases in 1 subject |
| Natural resourses and wildlife conservation | 3 |