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Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1899)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1906)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1908)

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Mollusks, Echinoderms, Coelenterates, etc. Part H Medusae and Ctenophora - Bigelow, Henry B. (Henry Bryant), 1879 -1967 (T. Mulvey, 1920)

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Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1890)

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A monograph of the British Desmidiaceæ - West, G. S. (George Stephen), 1876 -1919 (The Ray Society, 1905)

A monograph of the British Desmidiaceæ - West, G. S. (George Stephen), 1876 -1919 (The Ray Society, 1912)

A monograph of the British Desmidiaceæ - West, G. S. (George Stephen), 1876 -1919 (The Ray Society, 1923)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1900)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1910)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1915)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1922)

A monograph of the Erysiphaceae - Salmon, Ernest Stanley. (Torrey Botanical Club], 1900)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the order of Oligochaeta - Beddard, Frank E. (Frank Evers), 1858 -1925 (Clarendon Press, 1895)

A monograph of the recent Cephalopoda based on the collections in the British Museum (Natural History) - Robson, G. C. (Guy Coburn), 1888 -1945 (1932)

A monograph on the Polychaeta of Southern Africa - Day, J. H. (British Museum (Natural History), 1967)