Challenges and difficulties in assessing the environmental status under the requirements of the Ecosystem Approach in North African countries, illustrated by eutrophication assessment

1. Garmendia, M.
2. Borja, Á.
3. Breton, F.
4. Butenschön, M.
5. Marín, A.
6. Miller, P.I.
7. Morisseau, F.
8. Xu, W.