Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 1: Screening, quantitative analysis and comparison of sampling methods

1. Rico, A.
2. Arenas-Sánchez, A.
3. Alonso-Alonso, C.
4. López-Heras, I.
5. Nozal, L.
6. Rivas-Tabares, D.
7. Vighi, M.