First impact of biotechnology in the EU: Bt Maize adoption in Spain Database of the Safety and Benefits of Biotechnology Here The database contains 2 references relating to the Safety and Benefits of Biotechnology and "Tollens E". References relating to "Tollens E": First impact of biotechnology in the EU: Bt Maize adoption in Spain (2004) Demont M, Tollens E GM Crops in Europe: How Much Value and for Whom? (2007) Demont M, Dillen K, Mathijs E, Tollens E