Fundamental catalogue of 1293 stars for the equinox 1900 from observations made at the Royal observatory, Cape of Good Hope, during the years 1905-1911: Q Science
The freedom of science in the modern state. A discourse delivered at the third general meeting of the 50th conference of the German Association of Naturalists and Physicians at Munich, on the 22nd of September, 1877. With a new pref. by the author. Translated from the German, with the author’s sanction Q Science
