Archiv für Naturgeschichte (Nicolai, 1907)

Archiv für Naturgeschichte (Nicolai, 1907)

Archiv für Naturgeschichte (Nicolai, 1907)

Archiv für Naturgeschichte (Nicolai, 1908)

Archiv für Naturgeschichte (Nicolai, 1908)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Ludwig - Ludwig, Hubert, 1852 -1913 (Printed for the Museum, 1905)

Asteroidea / by Hubert Lyman Clark - Clark, Hubert Lyman, 1870 -1947 (Printed for the Museum, 1920)

Asteroidea / by Hubert Lyman Clark - Clark, Hubert Lyman, 1870 -1947 (Printed for the Museum, 1920)

Bulletin - United States National Museum (G.P.O, 1911)

Bulletin - United States National Museum (G.P.O, 1930)

A descriptive monograph of Japanese asteroidea - Gotō, Seitarō, 1867 -1928 (Imperial University of Tokyo, 1914)

Handwörterbuch der naturwissenschaften - Verworn, Max, 1863 -1921 (G. Fischer, 1912)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1909)

Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass - Harvard University. Museum of Comparative Zoology. (The Museum, 1911)

Zoologica : scientific contributions of the New York Zoological Society - New York Zoological Society. (1928)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1905)