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Kungl. Svenska vetenskapsakademiens handlingar - Kungl. Svenska vetenskapsakademien. (L.L. Grefing, 1916)

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

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

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)

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A laboratory manual in elementary biology; an inductive study in animal and plant morphology designed for preparatory and high schools - Boyer, Emanuel Roth, 1851 -1900 (Heath, 1894)

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

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)

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Laboratory outlines for general botany, for the elementaty study of plant structures and functions from the standpoint of evolution - Schaffner, John H. (John Henry), 1866 -1939 (Tha author, 1913)

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LATMOSS, a catalogue of neotropical mosses - Cárdenas S., Ángeles, 1949 - (Missouri Botanical Garden, 1995)

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

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

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

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

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Leitpflanzen der palaeozoischen Steinkohlenablagerungen in Mittel-Europa - Hofmann, Adolf, 1853 - (Calve, 1899)

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The lower Eocene floras of southeastern North America - Berry, Edward Wilber, 1875 -1945 (Govt. Print. Off, 1916)

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