Leitfaden für den Unterricht in der Botanik an Gymnasien und höheren Bürgerschulen : Zugleich als Anleitung zur leichteren Bestimmung der wildwachsenden Gefässpflanzen des mittleren und nördlichen Deutschlands - Wirtgen, Philipp Wilhelm, 1806 -1870 (T. Hölscher, 1852)

The lens - State Microscopical Society of Illinois. (State Microscopical Society of Illinois, 1873)

Leonard's catalogue of seeds & tools : 1899 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.F. Leonard, 1899)

Leonard's illustrated catalogue : 1897 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.F. Leonard, 1897)

Leonard's illustrated catalogue : 1898 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.F. Leonard, 1898)

Leonard's market gardeners' catalogue, 1916 : Leonards seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1916)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1927)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1925)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1920)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1921)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1923)

Leonard's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Company, 1919)

Leonard's seeds 1893 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.F. Leonard, 1893)

Leonard's seeds 1894 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.F. Leonard, 1894)

Leonard's seeds : descriptive list for 1913 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1913)

Leonard's seeds : market gardeners' catalogue, 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1914)

Leonard's seeds : seed annual 1917 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1917)

Leonard's seeds : seed annual 1918 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1918)

Leonard seed annual for 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1914)

Leonard Seed Co. [catalog] : 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Leonard Seed Co, 1909)

Leopoldina - Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher (E. Blochmann & Sohn, 1880)

The Lepidoptera of New York and neighboring states, primitive forms Microlepidoptera, Pyraloids, Bombyces - Forbes, William T. M. (William Trowbridge Merrifield), 1885 -1968 (Cornell Univ, 1920)

Letherman's proven merit seeds for home and market gardeners : 1929 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Holmes-Letherman Seed Co, 1929)

Letherman's proven merit seeds for home and market gardeners : 1931 garden guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Letherman Seed & Supply Co, 1931)

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Letters on the elements of botany, addressed to a lady - Rousseau, Jean-Jacques, 1712 -1778 (B. and J. White, 1796)

Letters on the elements of botany. Addressed to a lady - Rousseau, Jean-Jacques, 1712 -1778 (B. White, 1787)

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)

Der Lichtgenuss der Pflanzen : photometrische und physiologische Untersuchungen mit besonderer Rücksichtnahme auf Lebensweise, geographische Verbreitung und Kultur der Pflanzen - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1907)

Life-histories of the birds of eastern Pennsylvania - Gentry, Thomas G. (Thomas George), 1843 -1905 (Published by the author, 1876)

Life-histories of the birds of eastern Pennsylvania - Gentry, Thomas G. (Thomas George), 1843 -1905 (Pub. by the author, 1876)

The life history of timothy - Evans, Morgan W. (Morgan William), 1879 - (U.S. Dept. of Agriculture, 1927)

Lijst van nederlandsche, hoogduitsche, fransche en engelsche namen van planten - Heukels, Hendrik, 1854 -1936 (N.V. Boekhandel en Drukkerij, 1910)

Lilly's complete annual catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1913)

Lilly's complete annual catalog : seeds fertilizers stock foods bee supplies spray materiels poultry supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1917)

Lilly's complete annual catalog : seeds, stock foods poultry supplies bee supplies fertilizers spray materiels - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1918)

Lilly's complete annual : seeds fertilizers spray materiels poultry supplies stock foods bee supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1916)

Lilly's crop book. no 13 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1926)

Lilly's seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chas. H. Lilly Co, 1912)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1831)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1832)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1834)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1835)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1837)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1838)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1840)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1842)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1843)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1848)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1853)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1859)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1861)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1863)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1864)

Linnaea : Ein Journal für die Botanik in ihrem ganzen Umfange - Schlechtendal, D. F. L. von (Diedrich Franz Leonhard von), 1794 -1866 (F. Dümmler, 1878)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1935)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1948)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1931)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1984)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1980)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1955)

List of intercepted plant pests - United States. Agricultural Research Service. (U.S. G.P.O.], 1960)

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A list of plants growing without cultivation in Franklin, Hampshire and Hampden counties, Massachusetts - Stone, George E. (George Edward), 1860 -1941 (Carpenter & Morehouse, 1913)

A list of plants growing without cultivation in Franklin, Hampshire and Hampden Counties, Massachusetts - Stone, George E. (George Edward), 1860 -1941 (Carpenter & Morehouse, 1913)

List of Pteridophyta and Spermatophyta growing without cultivation in northeastern North America - American Association for the Advancement of Science. (1893)

List of seeds collected during ... - Royal Botanic Garden, Edinburgh. (Printed for Her Majesty's Stationery Office, 1908)

List of seeds collected during ... - Royal Botanic Garden, Edinburgh. (Printed for Her Majesty's Stationery Office, 1912)

List of seeds collected during ... - Royal Botanic Garden, Edinburgh. (Printed for Her Majesty's Stationery Office, 1913)

List of seeds for exchange - National Botanic Gardens (Ireland) (Royal Botanic Gardens, 1944)

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Literaturberichte zur Flora, oder Allgemeinen botanischen Zeitung - Königl. Bayer. Botanische Gesellschaft zu Regensburg. (K. Bayerische Botanische Gesellschaft, 1834)

Literaturberichte zur Flora, oder Allgemeinen botanischen Zeitung - Königl. Bayer. Botanische Gesellschaft zu Regensburg. (K. Bayerische Botanische Gesellschaft, 1837)

Literaturberichte zur Flora, oder Allgemeinen botanischen Zeitung - Königl. Bayer. Botanische Gesellschaft zu Regensburg. (K. Bayerische Botanische Gesellschaft, 1839)

The living flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (Wheeling News Litho. Co, 1913)

Livingston's seed annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (A. W. Livingston's Sons, 1900)

Livingston's seed annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Livingstons Seed Co, 1914)

Livingston's seed annual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Livingstons Seed Co, 1923)

Livingston's true blue seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Livingstons Seed Co, 1891)

[L.L. May & Co. materials] - L.L. May & Co. (1890)

The London catalogue of British plants : containing the British Phænogamia, Filices, Equisetaceæ, Lycopodiaceæ, Selaginellaceæ, Marsileaceæ, Salviniaceæ and Charophyta. Adapted for marking desiderata in exchanges of specimens; for an index catalogue to British herbaria; for indicating the species of local districts; and for a guide to collectors by showing the comparative rarity or frequency of the several species - Fraser, H. (George Bell & Sons, 1925)

London Naturalist - London Natural History Society. (London Natural History Society, 1936)

London Naturalist - London Natural History Society. (London Natural History Society, 1956)

London Naturalist - London Natural History Society. (London Natural History Society, 1957)

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London Naturalist - London Natural History Society. (London Natural History Society, 2012)

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Long-term ecological consequences in tundra environments of the CANOL Crude Oil Pipeline Project, N.W.T - University of Alberta. Department of Geography. (1983)

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

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1859)

Lotos : Zeitschrift für Naturwissenschaften - Deutscher Naturwissenschaftlich-Medizinischer Verein für Böhmen "Lotos." (1860)

Loudon's encyclopaedia of plants; comprising the specific character, description, culture, history, application in the arts, and every other desirable particular respecting all the plants indigenous to, cultivated in, or introduced into Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longmans, Green, 1866)

Loudon's hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longman(etc],), 1850)

Loudon's Hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain. Part I. The Linnaean arrangement : part II. The Jussieuean arrangement - Loudon, J. C. (John Claudius), 1783 -1843 (Printed for Longman, Rees, Orme, Brown, and Green & Longman, 1839)

Loudon's hortus britannicus : a catalogue of all the plants indigenous, cultivated in, or introduced to Britain - Loudon, J. C. (John Claudius), 1783 -1843 (Longman(etc],), 1839)