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)

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 inland waters; an elementary text book of freshwater biology for American students - Needham, James G. (James George), 1868 -1957 (The Comstock publishing company, 1916)

The life of inland waters : an elementary text book of fresh-water biology for American students - Needham, James G. (James George), 1868 -1957 (Comstock Pub. Co, 1916)

The life of inland waters; an elementary text book of fresh-water biology for students - Needham, James G. (James George), 1868 -1957 (Comstock Publishing Co, 1937)

The life of inland waters; an elementary textbook of fresh-water biology for students - Needham, James G. (James George), 1868 -1957 (C. C. Thomas, 1930)

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

List of works relating to the natural history departments of the British Museum, to the end of the year 1910 - British Museum (Natural History) (Trustees of the British Museum, 1911)

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)

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

London Naturalist - London Natural History Society. (London Natural History Society, 2009)

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

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

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, 1948)

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, 1950)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1996)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2009)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 2008)

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

Managing information in support of park management goals and priorities. Proceedings of 1st workshop, Research programme on biodiversity in Laguna San Rafael National Park, Coyhaique, Chilean Patagonia, 12-15 de November 1996 - Rose, S. (WCMC, 1996)

Manejo de informacion para el apoyo de metas y prioridades de la administracion de parques nacionales. Actas del primer taller del programa de investigacion sobre biodiversidad en el Parque Nacional Laguna San Rafael - Rose, S. (WCMC, 1996)

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

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 (The 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)

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)

Manual of tropical medicine - Chalmers, Albert John, 1870 -1920 (Baillière, Tindall and Cox, 1919)

Marine Algae of Beaufort, N. C., and adjacent regions - Hoyt, William Dana, 1880 - (Govt. Print. Off, 1920)

The marine Algae of Peru - Howe, Marshall A. (Marshall Avery), 1867 -1936 (Press of the New era printing company], 1914)

The marine Algæ of the Danish West Indies - Børgesen, Frederik, 1866 -1956 (Printed by B. Luno, 1913)

Marine algae of the Faeröes - Børgesen, Frederik, 1866 -1956 (Printed by H.H. Thiele, 1902)

The marine algae of the Pacific coast of North America - Gardner, Nathaniel Lyon, 1864 -1937 (University of California Press, 1925)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica (Societas, 1876)

Meddelanden af Societas pro Fauna et Flora Fennica - Societas pro Fauna et Flora Fennica ([Societas pro Fauna et Flora Fennica], 1908)

Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1912)

Medicinalflora : eine Einführung in die allgemeine und angewandte Morphologie und Systematik der Pflanzen, mit besonderer Rücksicht auf das Selbststudium für Pharmaceuten, Mediciner und Studirende - Müller, Carl, 1855 -1907 (J. Springer, 1890)

Mémoires du Muséum national d'histoire naturelle. Série B, Botanique - Muséum national d'histoire naturelle (France) (Ed. du Museum, 1953)

Memoirs - Brooklyn Botanic Garden. (The Garden, 1918)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 1988)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1966)

Memoirs of the National Museum of Victoria - National Museum of Victoria (National Museum of Victoria, 1971)

Memoirs of the Queensland Museum - Queensland Museum. (Queensland Museum, 2008)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1902)

Memoirs of the Torrey Botanical Club - Torrey Botanical Club. (Published for the Club by the Seeman Printery, 1914)

Memoirs on the extinct wingless birds of New Zealand : with an appendix on those of England, Australia, Newfoundland, Mauritius, and Rodriguez - Owen, Richard, 1804 -1892 (J. Van Voorst, 1879)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1914)

The metabolism of algae - Fogg, G. E. (Gordon Elliott), 1919 - (Methuen, 1953)

Methods in plant histology - Chamberlain, Charles Joseph, 1863 -1943 (The University of Chicago press, 1924)

Methods in plant histology - Chamberlain, Charles Joseph, 1863 -1943 (University of Chicago Press, 1932)

Methods in plant histology - Chamberlain, Charles Joseph, 1863 -1943 (The University of Chicago Press, 1915)

Meyers Konversations-Lexikon : ein Nachschlagewerk des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Bibliographisches Institut, 1896)

Michigan botanist - Michigan Botanical Club. (Michigan Botanical Club, 1996)

Microbiology, a text-book of microörganisms, general and applied - Marshall, Charles E. (Charles Edward), 1866 -1927 (P. Blakiston's Son & Co, 1921)

Microbiology; a text-book of microörganisms, general and applied - Marshall, Charles E. (Charles Edward), 1866 -1927 (P. Blakiston's son & co, 1921)

Mikrochemie der pflanze - Molisch, Hans, 1856 -1937 (G. Fischer, 1923)

Die mikroskopische Pflanzenwelt des Süsswassers - Kirchner, O. (Oskar), 1851 -1925 (Gräfe & Sillem, 1891)

Mineral salts absorption in plants - Sutcliffe, James Frederick. (Pergamon Press, 1962)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1920)

Mitteilungen aus dem Naturwissenschaftlichen Verein für Neuvorpommern und Rügen in Griefswald ... - Naturwissenschaftlicher Verein für Neuvorpommern und Rügen, Greifswald. (1913)

Mitteilungen aus den Botanischen Staatsinstituten in Hamburg - Botanische Staatsinstitut (Hamburg, Germany) (L. Gräfe & Sillem, 1903)

Mittheilungen aus dem Jahrbuche der Kgl. ungarischen Geologischen Anstalt - Magyar Királyi Földtani Intézet. (Buchdruckerei der Stum A.-G., [etc.], 1873)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1900)

Modern biology - Moon, Truman Jesse, 1879 -1946 (H. Holt and company, 1947)

Modern biology - Moon, Truman Jesse, 1879 -1946 (Holt, Rinehart and Winston, 1965)

Monitoring the marine environment of Long Island Sound at Millstone Nuclear Power Station, Waterford, Connecticut : a review and evaluation, 1968-1982 - Northeast Utilities Service Company. (Northeast Utilities Service Co, 1983)

Monitoring the marine environment of Long Island Sound at Millstone Nuclear Power Station, Waterford, Connecticut : summary of studies prior to Unit 3 operation - Northeast Utilities Service Company. Environmental Laboratory. (Northeast Utilities, 1987)

Monitoring the marine environment of Long Island Sound at Millstone Nuclear Power Station, Waterford, Connecticut : three operational studies, 1986-1987 - Northeast Utilities Service Company. (Northeast Utilities, 1988)

Monographs in systematic botany from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 1988)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (Fischer, 1922)