Kryptogamenflora für Anfänger : eine Einführung in das Studium der blütenlosen Gewächse für Studierende und Liebhaber - Lindau, Gustav, 1866 -1923 (Springer, 1914)

Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1917)

Kunstformen der Natur - Bibliographisches Institut Leipzig. (Verlag des Bibliographischen Instituts, 1904)

Kunstformen der Natur - Bibliographisches Institut Leipzig. (Verlag des Bibliographischen Instituts, 1899)

A laboratory course in bacteriology : for the use of medical, agricultural, and industrial students - Gorham, Frederic P. (Frederic Poole), 1871 -1933 (W.B. Saunders, 1901)

Laboratory directions in general biology - Conklin, Edwin Grant, 1863 -1952 (Princeton University Press, 1900)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (Blakiston, 1916)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (Blakiston, 1919)

A laboratory manual in practical botany - Clark, Charles H. (Charles Herbert), 1854 - (American book company, 1898)

A laboratory manual of general botany - Wilkerson, Numa Francis. (Duke University Press, 1926)

A laboratory manual of high school botany - Clements, Frederic E. (Frederic Edward), 1874 -1945 (The University publishing co, 1900)

The lake trout (Salvelinus namaycush), of Swan Lake, Alberta - Alberta. Dept. of Recreation, Parks; Wildlife. Fish; Wildlife Division, (Government of Alberta, 1968)

Les Lamellibranches de l'Expedition du Siboga - Dautzenberg, Ph. (Philippe), 1849 -1935 (E. J. Brill, 1912)

Lectures on the evolution of plants (The Macmillan company, 1899)

Lectures on the evolution of plants (The Macmillan Co, 1899)

Lehrbuch der Botanik für Hochschulen - Strasburger, Eduard, 1844 -1912 (G. Fischer, 1911)

Lehrbuch der Botanik; für höhere Lehranstalten und die Hand des Lehrers, sowie für alle Freunde der Natur. Unter besonderer Berücksichtigung biologischer Verhältnisse bearb. von Otto Schmeil - Schmeil, O. (Otto), 1860 -1943 (Quelle & Meyer, 1911)

Lehrbuch der Botanik für höhere Lehranstalten und die Hand des Lehrers - Schmeil, O. (Otto), 1860 -1943 (E. Nägele, 1903)

Lehrbuch der Botanik, für mittlere und höhere lehranstalten - Prantl, Karl, 1849 -1893 (W. Engelmann, 1891)

Lehrbuch der Botanik für mittlere und höhere Lehrenstalten - Prantl, Karl, 1849 -1893 (W. Engelmann, 1883)

Lehrbuch der Botanik; nach dem Gegenwärtigen Stand der Wissenschaft - Frank, Albert Bernhard, 1839 -1900 (W. Engelmann, 1892)

Lehrbuch der ökologischen Pflanzengeographie - Warming, Eugenius, 1841 -1924 (Gebrüder Borntraeger, 1918)

Lehrbuch der Paläobotanik - Potonié, H. (Henry), 1857 -1913 (Borntraeger, 1921)

Leitfossilien : ein Hilfsbuch zum Bestimmen von Versteinerungen bei geologischen Arbeiten in der Sammlung und im Felde - Dacqué, Edgar, 1878 -1945 (Verlag von Gebrüder Borntraeger, 1908)

The lichen flora of the United States - Fink, Bruce, 1861 -1927 (University of Michigan Press, 1935)

Lichens - Smith, Annie Lorrain, 1854 - (Univ. Press, 1921)

Lichens of the State of Washington - Howard, Grace E. (Grace Elizabeth), 1886 - (University of Washington Press, 1950)

Life-like forms in meteorites and the problems of environmental control on the morphology of fossil and recent protobionta - Anders, Edward, 1926 - (The Academy, 1963)

The life of Devils Lake, North Dakota - Young, R. T. (Robert Thompson), 1874 - (North Dakota biological station, 1924)

Limnology and pollution in Lake Valencia, Venezuela - University of Michigan. Great Lakes; Marine Waters Center. (Great Lakes and Marine Waters Center, University of Michigan, 1982)

The lipids, their chemistry and biochemistry - Deuel, Harry James, 1897 -1956 (Interscience Publishers, 1951)

The lipids, their chemistry and biochemistry - Deuel, Harry James, 1897 -1956 (Interscience Publishers, 1957)

The living plant in leaf, flower, and fruit : a popular book on botany for the general reader - Step, Edward, 1855 -1931 (Hutchinson & Co, 1904)

Livre rouge des espèces menacées en France - Beaufort, François de, 1936 -1995 (Secrétariat de la faune et de la flore, Museum nationale d'histoire naturelle, 1987)

L.M.B.C. memoirs on typical British marine plants and animals - Liverpool Marine Biology Committee. (Liverpool Marine Biology Committee, 1900)

London Bird Report - London Natural History Society. (1964)

London Naturalist - London Natural History Society. (London Natural History Society, 1970)

London Naturalist - London Natural History Society. (London Natural History Society, 1977)

London Naturalist - London Natural History Society. (London Natural History Society, 1980)

London Naturalist - London Natural History Society. (London Natural History Society, 2001)

London Naturalist - London Natural History Society. (London Natural History Society, 2008)

Lotos - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (Verlag des Deutschen Naturwissenschaftlich-Medizinischen Vereines für Böhmen "Lotos", 1913)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1858)

The lower fungi Phycomycetes - Fitzpatrick, Harry Morton, 1886 -1949 (McGraw-Hill, 1930)

The luminescence of biological systems; proceedings of the conference on luminescence, March 28-April 2, 1954, sponsored by the Committee on Photobiology of the National Academy of Sciences-National Research Council and supported by the National Science Foundation - National Research Council (U.S.). Committee on Photobiology. (American Association for the Advancement of Science, 1955)

Lunds universitets årsskrift. 2. Afd, Medicin samt matematiska och naturvetenskapliga ämmen - Lunds universitet. (Universitets], 1920)

Macromolecular complexes - Society of General Physiologists. (Ronald Press Co, 1961)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1937)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1944)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1945)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1947)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1948)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1950)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1967)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2018)

Magyar botanikai lapok = Ungarische botanische Blätter - Degen, Árpád von, 1866 -1934 (Müller Karoly Könyvnyomdaja aja, 1910)

Magyar botanikai lapok = Ungarische botanische Blätter - Degen, Árpád von, 1866 -1934 (Müller Karoly Könyvnyomdaja aja, 1917)

Malacologia - Institute of Malacology. (Institute of Malacology], 1965)

Malacologia - Institute of Malacology. (Institute of Malacology], 1975)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1889)

Malpighia :rassegna mensuale di botanica - Penzig, O. (Ottone), 1856 -1929 (g. Capra & co, 1900)

Man and the biological world - Rogers, J. Speed (James Speed), 1892 -1955 (McGraw-Hill, 1952)

A manual of botany - Green, J. Reynolds (Joseph Reynolds), 1848 -1914 (J. & A. Churchill, 1895)

Manual of histology and bacteriology : including a concise statement of the important facts of microscopic technique and urinalysis, and a laboratory course of seventy practical exercises with provision for notes and drawings - Osburn, William, 1854 -1941 (Marshall & Bruce, 1899)

A manual of poisonous plants : chiefly of eastern North America : with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (Torch Press, 1911)

A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (Torch Press, 1910)

A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)