G-block staging entry validated for model fit. Imported from staging batch duell-thimm-g, source entry 854. Joint bibliography of dueling literature by Giorgio Enrico Levi and Jacopo Gelli, printed at Milan by Ulrico Hoepli in 1903. Local review notes that the volume also incorporates and expands Levi's earlier 1901 prefatory essay Del duello. It is a large thematic bibliography extending beyond fencing technique into legal, literary, military, and social literature on the duel. Thimm entry 878 should be read as a pre-publication or in-press notice rather than evidence for the already printed 1903 Hoepli edition. Thimm published in 1896, so he could only reflect an announced or projected Bibliografia del duello, not the final volume as issued in 1903.