Die Krankheiten der Pflanzen; ein Handbuch für Land- und Forstwirte, Gärtner, Gartenfreunde und Botaniker - Frank, Albert Bernhard, 1839 -1900 (E. Trewendt, 1895)

Kritische Flora der Provinz Schlezwig-Holstein, des angrenzenden Gebiets der Hansestädte Hamburg und Lübeck und des Fürstenthums Lübeck - Fischer-Benzon, R. von (Rudolph), 1839 -1911 (Paul Toeche, 1888)

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, 1919)

Kvetena Moravy a rakouského Slezska - Formánek, Eduard, 1845 -1900 (Nákl. spisovatelovým, 1887)

Laboratory and field exercises for "General botany" - Densmore, Hiram D. (Hiram Delos), 1862 - (Ginn and company, 1920)

Laboratory and field manual of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & company, 1907)

Laboratory and field manual of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & Company, 1907)

A laboratory course in plant physiology - Ganong, William Francis, 1864 -1941 (H. Holt, 1908)

A laboratory course in plant physiology - Ganong, William Francis, 1864 -1941 (H. Holt and Co, 1908)

A laboratory course in plant physiology, especially as a basis for ecology - Ganong, William Francis, 1864 -1941 (H. Holt and Company, 1901)

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

Laboratory directions in general biology prepared to accompany text book on General biology - Needham, James G. (James George), 1868 -1957 (The Comstock publishing co, 1922)

Laboratory directions in general physiology - Harvey, E. Newton (Edmund Newton), 1887 -1959 (Princeton University Press, 1913)

Laboratory directions in principles of animal biology - Shull, A. Franklin (Aaron Franklin), 1881 -1961 (McGraw-Hill, 1919)

Laboratory directions in principles of animal biology - Shull, A. Franklin (Aaron Franklin), 1881 -1961 (McGraw-Hill book company, inc.; [etc., etc.], 1919)

Laboratory exercises for introductory biology - Moon, Truman Jesse, 1879 -1946 (Department of Education, 1964)

Laboratory exercises in anatomy and physiology - Peabody, James Edward. (Holt and Co, 1902)

Laboratory exercises in high school biology - Alberta. Dept. of Education. (1955)

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 guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (P. Blakiston's son & co, 1916)

A laboratory guide for general botany - Gager, C. Stuart (Charles Stuart), 1872 -1943 (P. Blakiston's Son & Co, 1919)

A laboratory manual for work in general science - Caldwell, Otis W. (Otis William), 1869 -1947 (Ginn, 1915)

A laboratory manual of experimental physiology (including general physiology) - Fraser, Lois McPhedran (University of Toronto Press, 1922)

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

Laboratory manual of a year in science - Thalman, Joseph Luther, 1878 - (Row, Peterson and company, 1916)

A laboratory notebook of elementary zoology - Hindle, Edward, 1886 - (Govt. press, 1922)

Laboratory outlines for general botany, for the elementary study of plant structures and functions from the standpoint of evolution - Schaffner, John H. (John Henry), 1866 -1939 (The author, 1922)

Laboratory problems in civic biology - Hunter, George W. (George William), 1873 -1948 (American book company, 1916)

Laboratory problems in civic biology - Hunter, George W. (George William), 1873 -1948 (American Book Company, 1916)

Laboratory problems in civic biology - Hunter, George W. (George William), 1873 -1948 (American Book Co, 1916)

Laboratory technique in biology and medicine - Cowdry, E. V. (Edmund Vincent), 1888 -1975 (Williams & Wilkins Co, 1948)

Laboratory technique in biology and medicine - Cowdry, E. V. (Edmund Vincent), 1888 -1975 (Williams & Wilkins, 1952)

Le lac de Grand-Lieu : monographie phytogéographique - Gadeceau, Émile 1845 -1928 (A. Dugas, 1909)

Les lacs des hauts plateaux de l'Amérique du Sud - Chevreux, Édouard, 1846 -1931 (Imprimerie nationale, 1906)

Laerebog i den botaniske terminologie og systemlaere - Drejer, Salomon Thomas Nicolai, 1813 -1842 (Schuboth, 1839)

Lake Wabamun : a review of scientific studies and environmental impacts - Alberta. Alberta Environment. (Alberta Environment, 2004)

The land and sea mammals of Middle America and the West Indies - Elliot, Daniel Giraud, 1835 -1915 (Field Columbian Museum, 1904)

Leaflets - Brooklyn Botanic Garden. (1933)

Leaflets of western botany - Eastwood, Alice, 1859 -1953 ([J. T. Howell], 1953)

Leaves and flowers; or, Object lessons in botany with a flora - Wood, Alphonso, 1810 -1881 (1863)

Leaves and flowers; or, Object lessons in botany. With a flora - Wood, Alphonso, 1810 -1881 (Barnes, 1874)

Das Leben der Binnengewässer - Lampert, Kurt, 1859 -1918 (C.H. Tauchnitz, 1899)

Das Leben der Pflanze - Francé, R. H. (Raoul Heinrich), 1874 -1943 (Kosmos, Gesellschaft der Naturfreunde, 1906)

Lebensgeschichte der Blütenpflanzen Mitteleuropas : spezielle Ökologie der Blütenpflanzen Deutschlands, Österreichs und der Schweiz - Schröter, Carl, 1855 -1939 (E. Ulmer, 1908)

Lectures on plant physiology - Harvey-Gibson, R. J. (Robert John), 1860 -1929 (Clarendon Press, 1907)

Lectures on plant physiology - Jost, Ludwig, 1865 -1947 (Clarendon Press, 1907)

Lectures on the physiology of plants - Sachs, Julius, 1832 -1897 (Clarendon Press, 1887)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (Univ. Press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (University Press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (University press, 1886)

Lectures on the physiology of plants - Vines, Sydney Howard, 1849 -1934 (The University Press, 1886)

Lehrbuch der Anatomie und Physiologie der Pflanzen unter besonderer Berücksichtigung der Forstgewächse - Hartig, Robert, 1839 -1901 (J. Springer, 1891)

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 botanik nach dem gegenwärtigen stand der wissenschaft - Sachs, Julius, 1832 -1897 (W. Engelmann, 1874)

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

Lehrbuch der ökologischen pflanzengeographie - Warming, Eugenius, 1841 -1924 (Gebrüder Borntraeger, 1902)

Lehrbuch der Pflanzenphysiologie, mit besonderer Berücksichtigung der landwirtschaftlichen Kulturpflanzen - Frank, H. B (P. Parey, 1896)

Lehrbuch der praktischen Pflanzenkunde in Wort und Bild : für Schule und Haus, für Gebildete aller Stände : mit über 1000 Abbildungen auf 60 colorirten Tafeln in Doppelfolio und 214 Holzschnitten - Hoffmann, Carl, 1802 -1883 (Hoffmann'sche Verlags-Buchhandlung, 1880)

Die Lehre von der Pflanzenzelle - Hofmeister, Wilhelm, 1824 -1877 (Engelmann, 1867)

Leitfaden für das zoologische Praktikum - Kükenthal, W. G. (Willy Georg), 1861 -1922 (Gustav Fischer, 1910)

Leitfaden für das zoologische Praktikum - Kükenthal, W. G. (Willy Georg), 1861 -1922 (G. Fischer, 1912)

Leitfaden für das zoologische Praktikum - Kükenthal, W. G. (Willy Georg), 1861 -1922 (Fischer, 1912)

Le Léman : monographie limnologique - Forel, F. A. (François Alphonse), 1841 -1912 (F. Rouge, 1904)

The Lepidopterists' news : the monthly newsletter of the Lepidopterists' Society - Lepidopterists' Society (Lepidopterists' Society, 1947)

The Lepidopterists' news : the monthly newsletter of the Lepidopterists' Society - Lepidopterists' Society (Lepidopterists' Society, 1952)

The Lepidopterists' news : the monthly newsletter of the Lepidopterists' Society - Lepidopterists' Society (Lepidopterists' Society, 1955)

The Lepidopterists' Society, commemorative volume, 1945-1973 - Clench, Harry K. (The Society, 1945)

Lessons in Elementary Botany, the part of Systematic Botany based upon material left in manuscript by the late Prof. Henslow - Oliver, Daniel, 1830 -1916 (MacMillan, 1888)

Lessons in elementary botany. The part of systematic botany based upon material left in manuscript by the late Professor Henslow ... - Oliver, Daniel, 1830 -1916 (Macmillan, 1876)

Lexicon generum phanerogamarum inde ab anno MDCCXXXVII : cum nomenclatura legitima internationali et systemate inter recentia medio - Post, Thomas Erik von, 1858 -1912 (Deutsche verlags-anstalt, 1904)

Life; a book for elementary students - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (University Press, 1923)

The life history of the least darter, Etheostoma microperca, in the Iroquois River, Illinois - Illinois. Natural History Survey Division (State of Illinois, Illinois Institute of Natural Resources, Natural History Survey Division, Illinois Natural History Survey, 1979)