L’Osservatorio Geodinamico nel Seminario di Aquila. Discorsi recitati nella solenne inaugurazione del dì 16 Marzo 1884Aquila Bernardino Vecchioni 1884 240x168 mm. viii, 59 p. Original printed wrappers. Spine rather frayed, upper cover and first leaves a bit loose. A very good, unopened copy. On upper cover the inked number ‚74’. The main lecture was held by Raffaele Maccallini, the first director of the Geodynamic Observatory at the Seminary of L’Aquila.