Books by Johann G. Hagen:
Books in the extended shelves:
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Hagen, Johann G., 1847-1930: ... Supplementary notes to the Atlas stellarum variabilium (Georgetown university press, 1901), also by D.C.) Georgetown College Observatory (Washington (page images at HathiTrust)- Hagen, Johann G., 1847-1930: Atlas stellarum variabilium (apud F.L. Dames, 1899), also by Catharine W. Bruce (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Atlas stellarum variabilium (Apud Felicem L. Dames, 1899), also by M. Wolz, J. W. J. A. Stein, Frances Woodworth Wright, Friedrich Becker, Michael Esch, Catherine Wolfe Bruce, and Specola vaticana (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Beobachtungen veränderlicher sterne (F.L. Dames, 1903), also by Eduard Heis, Roderick Martin, Ernst Goetz, Adalbert Krueger, and D.C.) Georgetown College Observatory (Washington (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Die veranderlichen Sterne. (Herder, 1913) (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Die veränderlichen Sterne (Herdersche Verlagshandlung, 1913) (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Die veränderlichen Sterne (Herder, 1921), also by Johann Stein (page images at HathiTrust)
- Hagen, Johann G., 1847-1930: First [-sixth] note on W. Herschel's observations of extended nebulous fields. ([Printed by Neill], 1926) (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Index operum Leonardi Euleri (F. L. Dames, 1896) (page images at HathiTrust)
- Hagen, Johann G., 1847-1930: La rotation de la terre : ses preuves mécaniques anciennes et nouvelles (Tipografia poliglotta vaticana, 1911) (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: The photochronograph and its applications. (Stormont & Jackson, printers, 1894), also by D.C.) Georgetown College Observatory (Washington, John T. Hedrick, G. A. Fargis, and José Algué (page images at HathiTrust)
- Hagen, Johann G., 1847-1930: Synopsis der Hoeheren Mathematik (F. L. Dames, 1891) (page images at HathiTrust; US access only)
- Hagen, Johann G., 1847-1930: Synopsis der hoeheren mathematik (F.L. Dames, 1891) (page images at HathiTrust; US access only)
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