BIBLIOGRAPHY CONTRIBUTOR Gilbert Dahan First name Gilbert Last name Dahan Bibliography entries by this contributor Dahan, Gilbert. 1991. Gersonide En Son Temps : Science Et Philosophie Médiévales. Louvain; Paris: E. Peeters. Goldstein, Bernard, and Gilbert Dahan. 1991. “Levi Ben Gerson's Astrology In Historical Perspective”. In Gersonide En Son Temps : Science Et Philosophie Médiévale, 287-300. Louvain: Peeters.