Occurrence of Bacillus thuringiensis harboring insecticidal cry1 genes in a corn field in Northern Italy Cesare Accinelli, Maria Ludovica Saccá, Gianumberto Accinelli and Stefano MainiAgron. Sustain. Dev., 28 4 (2008) 473-480DOI: https://doi.org/10.1051/agro:2008040