An exposure study to assess the potential impact of fipronil in treated sunflower seeds on honey bee colony losses in Spain

1. Bernal, J.
2. Martin-Hernandez, R.
3. Diego, J.C.
4. Nozal, M.J.
5. Gozalez-Porto, A.V.
6. Bernal, J.L.
7. Higes, M.