Karl Eduard von Martens (1831-1904) : his life and works - Boss, Kenneth J. (Kenneth Jay), 1935 -2014 (Dept. of Mollusks, Museum of Comparative Zoology, Harvard University, 1997)

Katalog der in der Paläarctischen Region lebenden Binnenconchylien - Westerlund, Carl Agardh, 1831 -1908 (E.G. Johansson's Buchdruckerei, 1890)

Die Klassen und Ordnungen des Thier-Reichs, wissenschaftlich dargestellt in Wort und Bild - Bronn, H. G. (Heinrich Georg), 1800 -1862 (C.F. Winter, 1862)

Knowledge. v. 1-40; Nov. 1881-Dec. 1917 (Wyman [etc.])

Konchyliologen Otto Andreas Lowson Mørch : en biografisk skizze - Collin, Jonas, 1840 -1905 (Bianco Lunos Bogtrykkeri, 1878)

Det Kongelige Danske videnskabernes selskabs skrifter. Naturvidenskabelig og mathematisk afdeling - Kongelige Danske videnskabernes selskab. (1919)

Kosmos (Ernst Günther, 1877)

Kreis oder Stamm des Thierreiches - Lang, Arnold, 1855 -1914 (s.n, 1894)

Die Kreiselschnecken oder Trochoideen (Gattungen Turbo, Trochus, Solarium, Rotella, Delphinula, Phasianella) : in Abbildungen nach der Natur mit Beschreibungen - Philippi, Rodolfo Amando, 1808 -1904 (Verlag von Bauer und Raspe (Julius Merz), 1846)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1841)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1848)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1877)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1913)

Kurzgefasstes systematisches Verzeichniss meiner Conchyliensammlung nebst Andeutung aller bis jetzt von mir bei Halle gefundenen : Land- und Flussconchylien zur Erleichterung des Tausches für Freunde der Conchyliologie - Schlüter, Fr. (Druck der Gebauerschen Buchdr, 1838)

Kútak, geológiai viszonyok, növényzet - Hollós, László, 1859 -1940 (Nyomatott tóth Lászlónál, 1896)

Le lac Léman : précis scientifique - Forel, F. A. (François Alphonse), 1841 -1912 (H. Georg, 1886)

Lake Bonneville - Gilbert, Grove Karl, 1843 -1918 (United States Geological Survey, 1890)

Lake Bonneville - Gilbert, Grove Karl, 1843 -1918 (U.S. Govt. Print. Off, 1890)

Lake Maxinkuckee : a physical and biological survey - Evermann, Barton Warren, 1853 -1932 (Dept. of Conservation, 1920)

Lake Maxinkuckee. a physical and biological survey - Evermann, Barton Warren, 1853 -1932 (Wm. B. Burford, printer], 1920)

Lake Superior: its physical character, vegetation, and animals, compared with those of other and similar regions - Agassiz, Louis, 1807 -1873 (Gould, Kendall and Lincoln, 1850)

Lake Superior its physical character, vegetation and animals, compared with those of other and similar regions - Agassiz, Louis, 1807 -1873 (Gould, Kendall and Lincoln, 1850)

Lakes and rivers - Groom Napier, Charles Ottley, 1839 - (Committee of General Literature and Education, Society for Promoting Christian Knowledge, 1879)

Lamarck's genera of shells, with a catalogue of species - Gould, Augustus A. (Augustus Addison), 1805 -1866 (Allen and Ticknor, 1833)

Lamarck's genera of shells : with a catalogue of species - Gould, Augustus A. (Augustus Addison), 1805 -1866 (Allen and Ticknor, 1833)

The land & fresh water shells of La Salle County, Ills. [sic] - Calkins, William Wirt, 1842 -1914 (H. McAllaster & Co, 1874)

The land and fresh water Mollusca in the vicinity of New Philadelphia : a contribution to the natural history of Tuscarawas Co., Ohio - Sterki, Victor, 1846 -1933 (Beobachter Print, 1894)

Land and fresh water mollusks - Nutting, Charles Cleveland, 1858 -1927 ([Smithsonian Institution], 1910)

Land and fresh water mollusks - Dall, William Healey, 1845 -1927 (Doubleday, Page, and Company, 1905)

Land and fresh-water shells: an introduction to the study of conchology - Roebuck, William Denison, 1851 -1919 (Swan Sonnenschein & Co, 1889)

Land and fresh-water shells: an introduction to the study of conchology - Roebuck, William Denison, 1851 -1919 (S. Sonnenschein & co, 1892)

Land and fresh-water shells: an introduction to the study of conchology - Williams, Joseph W. (S. Sonnenschein, 1907)

The land and fresh water shells of the British Isles - Rimmer, Richard. (J. Grant, 1880)

The land and fresh water shells of the districts around Manchester - Dyson, David (J. Harrison, 1850)

The land and freshwater mollusks indigenous to, or naturalized in, the British Isles - Reeve, Lowell Augustus 1814 -1865 (Reeve, 1863)

The land and freshwater mollusks indigenous to, or naturalized in, the British Isles - Reeve, Lowell Augustus 1814 -1865 (Reeve and Co, 1863)

The land and freshwater shells of the British Isles : with illustrations of all the species - Rimmer, Richard. (W. H. Allen & Co, 1880)

Land snail survey of the lower Salmon River drainage, Idaho - Frest, Terrence J. (Bureau of Land Management, Idaho State Office, 1997)

Die Land- und Süsswasser-Conchylien der Vorwelt - Sandberger, Fridolin, 1826 -1898 (1870)

Late Pleistocene vertebrates from archaeological sites in the Plain of Kom Ombo, Upper Egypt - Royal Ontario Museum. (Royal Ontario Museum], 1972)

Latreille's Naturliche Familien des Thierreichs - Latreille, P. A. (Pierre André), 1762 -1833 (Im Verlage des Gr. H.S. priv. Landes-Industrie- Comptoirs, 1827)