BIBLIOGRAPHY CONTRIBUTOR Levi ben Gershom First name Levi Last name ben Gershom Bibliography entries by this contributor ben Gershom, Levi, and Charles Manekin. 1992. The Logic Of Gersonides: A Translation Of Sefer Ha-Heqqesh Ha-Yashar [Book On Valid Syllogisms] Of Rabbi Levi Ben Gershom. Dordrecht; Boston: Kluwer Academic Publishers. ben Gershom, Levi. 1967. Perush ʿAl Sefer Ha‐Torah [Commentary On The Pentateuch]. Jerusalem. ben Gershom, Levi, Gerson Lange, and Gerson German. 1909. Sefer Maʾaśeh Ḥoshev [The Work Of A Counter]. Frankfurt am Main: Y. L. Golde. Feldman, Seymour, and Levi ben Gershom. Sefer Milḥamot Ha-Shem [The Wars Of The Lord]. 3 vol.. Philadelphia: Jewish Publication Society.