Global ETD Search

About
The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

1	Das photographische Helligkeitsverhältnis der Sonne zu fixsternen ... Birck, Otto, January 1909 (has links) Inaug.-diss.-Göttingen. / Includes bibliographical references. Solar radiation. Stars.
2	Das photographische Helligkeitsverhältnis der Sonne zu fixsternen ... Birck, Otto, January 1909 (has links) Inaug.-diss.-Göttingen. / Bibliographical foot-notes. Solar radiation. Stars.