A catalogue of 1001 southern stars for 1850.0 from observations by signor Tacchini, at Palermo, in the years 1867, 1868, 1869
| Tacchini, Pietro, 1838-1905 |
| A catalogue of 1001 southern stars for 1850.0 from observations by signor Tacchini, at Palermo, in the years 1867, 1868, 1869 ; A list of 437 southern stars for 1850.0 derived from Washington transit-circle observations, and compared with observations at the Cape Hope, Cordoba and with Yarnall's catalogue / [edited] by rev. Father Hagen, S.J., and Edward S. Holden |
| [S.l. : s.n., 18--?] |
| Hagen, Johann Georg, 1847-1930 |
| Gli esperimenti col pendolo libero / G. Hagen |
| In: Atti dell'Accademia pontificia de' Nuovi Lincei T. 83 (1929-30), p. 59-61 |
| Hagen, Johann Georg, 1847-1930, mittente |
| Hagen Johann Georg a Favaro Antonio, 19 febbraio 1915 |
| In: Carteggio Favaro I: Carteggio generale |
| Hagen, Johann Georg, 1847-1930, mittente |
| Hagen Johann Georg a Favaro Antonio, 21 luglio 1915 |
| In: Carteggio Favaro I: Carteggio generale |
| Hagen, Johann Georg, 1847-1930, mittente |
| Hagen Johann Georg a Favaro Antonio, 18 settembre 1915 |
| In: Carteggio Favaro I: Carteggio generale |
La rotation de la Terre
| Hagen, Johann Georg, 1847-1930 |
| La rotation de la Terre : ses preuves mécaniques anciennes et nouvelles. |
| Roma : Tip. poliglotta vaticana, 1910-1912. |