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A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1931)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1941)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1947)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (Fischer, 1922)

Morphologie und biologie der algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1904)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1922)

Morphologie und biologie der algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1905)

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Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1902)

Naturae novitates : Bibliographie neuer Erscheinungen aller Länder auf dem Gebiete der Naturgeschichte und der exacten Wissenschaften (R. Friedländer & Sohn, 1907)

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The Natural history of Juan Fernandez and Easter Island - Skottsberg, Carl, 1880 -1963 (Almqvist & Wiksells Boktryckeri, 1924)

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The natural history of plants : their forms, growth, reproduction, and distribution - Kerner von Marilaun, Anton, 1831 -1898 (Blackie, 1895)

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The natural history of plants, their forms, growth, reproduction, and distribution - Kerner von Marilaun, Anton, 1831 -1898 (H. Holt and Company, 1895)

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The natural history of plants, their forms, growth reproduction, and distribution; from the German of Anton Kerner von Marilaun - Kerner von Marilaun, Anton, 1831 -1898 (Blackie & Son, 1895)

The natural history of plants, their forms, growth, reproduction, and distribution - Kerner von Marilaun, Anton, 1831 -1898 (Blackie, 1902)

The natural history of plants, their forms, growth, reproduction, and distribution: from the German of Anton Kerner von Marilaun - Kerner von Marilaun, Anton, 1831 -1898 (H. Holt, 1895)

The natural history of plants; their forms, growth, reproduction, and distribution - Kerner von Marilaun, Anton, 1831 -1898 (Blackie, 1894)

The natural history of the island of Fernando de Noronha based on the collections made by the British Museum Expedition in 1887 - Ridley, H. N. (Henry Nicholas), 1855 -1956 (Academic Press], 1890)

The Natural History of the Scarborough district - Rimington, F. C. (Scarborough Field Naturalists' Society, 1953)

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A naturalist in the Bahamas, John I. Northrop, October 12, 1861-June 25, 1891; a memorial volume - Osborn, Henry Fairfield, 1857 -1935 (Columbia University Press, 1910)

A naturalist in the Bahamas: John I. Northrop, October 12 1861 - June 25, 1891: a memorial volume - Osborn, Henry Fairfield, 1857 -1935 (Columbia University Press, 1910)

A naturalist on desert islands - Lowe, Percy Roycroft, 1870 - (Witherby & co, 1911)

A naturalist's holiday; idle hours on the Cornish coast - Step, Edward, 1855 -1931 (T. Nelson, 1910)

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Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1900)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1902)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1903)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1904)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1905)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1906)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1908)

Nature - Lockyer, Norman, Sir, 1836 -1920 (Macmillan Journals Ltd., etc, 1913)

The nature-printed British sea-weeds : a history, accompanied by figures and dissections of the algae of the British Isles - Bradbury, Henry, 1831 -1860 (Bradbury and Evans, 1860)

The nature-printed British sea-weeds : a history, accompanied by figures and dissections of the Algae of the British Isles - Bradbury, Henry, 1831 -1860 (Bradbury and Evans, 1859)

Naturen : illustreret maanedsskrift for populaer naturvidenskab - Bergens Museum. (E. B. Giertsen [etc.], 1912)

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Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1897)

Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1887)

Naturwissenschaftliche Rundschau : wöchentliche Berichte über die Fortschritte auf dem Gesammtgebiete der Naturwissenschaften (Druck und verlag von Friedrich Vieweg und Sohn, 1892)

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Naturwissenschaftliche Rundschau : wöchentliche Berichte über die Fortschritte auf dem Gesammtgebiete der Naturwissenschaften (Druck und verlag von Friedrich Vieweg und Sohn, 1904)

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Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde - Bronn, H. G. (Heinrich Georg), 1800 -1862 (E. Schweizerbart's Verlagshandlung, 1915)

The New phytologist - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Academic Press, 1918)

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Nomenclator botanicus. Nominum ad finem anni 1858 publici juris factorum, classes, ordines, tribus, familias, divisiones, genera, subgenera vel sectiones designatium enumeratio alphabetica. Adjectis auctoribus, temporibus, locis systematicis, apud varios, notis literariis atque etymologicis et synonymis - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischeri, 1873)

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Northern and Arctic invertebrates in the collection of the Swedish State Museum (Riksmuseum) - Naturhistoriska riksmuseet (Sweden) (Almqvist & Wiksell, 1912)

The Norwegian forms of Lithothamnion - Foslie, Mikal Heggelund, 1855 -1909 (Aktietrykkeriet, 1895)