The sponges - Lendenfeld, R. von (Robert), 1858 -1913 (Printed for the Museum, 1915)

The sponges / by H. V. Wilson - Wilson, H. V. (Henry Van Peters), 1863 -1939 (Printed for the Museum, 1904)

The sponges / by Robert von Lendenfeld - Lendenfeld, R. von (Robert), 1858 -1913 (Printed for the Museum, 1910)

The sponges / by Robert von Lendenfeld - Lendenfeld, R. von (Robert), 1858 -1913 (Printed for the Museum, 1915)

Spongiologische Beiträge - Leuckart, Rudolf, 1823 -1898 (C.F. Winter'sche, 1892)

The story of the universe, told by great scientists and popular authors - Singleton, Esther, 1930 (P.F. Collier and Son, 1905)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and co, 1898)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1898)

Studies on the Hexactinellida : contribution I. (Euplectellidae) - Iijima, Isao, 1861 -1921 (Imperial University of Tokyo, 1901)