Memorias de la Real Academia de Ciencias y Artes de Barcelona - Real Academia de Ciencias y Artes de Barcelona. (1914)

Memorias de la Real Academia de Ciencias y Artes de Barcelona - Real Academia de Ciencias y Artes de Barcelona. (1915)

Memorias de la Real Sociedad Española de Historia Natural - Real Sociedad Española de Historia Natural. (s.n.], 1906)

Memorias y revista de la Sociedad Científica "Antonio Alzate." - Sociedad Científica "Antonio Alzate." (Imprenta del Gobierno en el Ex-Arzobispado, 1893)

Memorie - Classe di scienze fisiche, matematiche e naturali - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (Accademia Nazionale dei Lincei, 1877)

Memorie dell'Istituto geologico della R. Università di Padova - Università di Padova. Istituto geologico. (Società Cooperativa Tipografica, 1916)

Memorie della Reale Accademia delle Scienze dell'Istituto di Bologna, Classe di Scienze Fisiche - R. Accademia delle scienze dell'Istituto di Bologna. (1893)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1839)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1840)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1844)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1861)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1864)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1871)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1884)

Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1900)

Merveilles de la nature : l'homme et les animaux, description populaire des races humaines et des règne animal - Brehm, Alfred Edmund, 1829 -1884 (J.-B. Baillière et Fils, 1878)

De metamorphosi eleutheratorum observationes : bidrag til insekternes udviklingshistorie - Schiødte, J. C. (Jørgen Matthias Christian), 1815 -1884 (Thieles Bogtrykkeri, 1864)

De metamorphosi eleutheratorum observationes : bidrag til insekternes udviklingshistorie - Schiødte, J. C. (Jørgen Matthias Christian), 1815 -1884 (Thieles Bogtrykkeri, 1861)

Mexico, April 21, 1898 - May 1, 1899 - Goldman, Edward Alphonso, 1873 -1946 (1898)

Mexico, August 10 - November 22, 1893 - Goldman, Edward Alphonso, 1873 -1946 (1893)

Mexico, August 31, 1897 - April 20, 1898 - Goldman, Edward Alphonso, 1873 -1946 (1897)

Mexico, February 21 - March 1, 1893 - Nelson, Edward William, 1855 -1934 (1893)

Mexico, July 22 - September 18, 1896 - Goldman, Edward Alphonso, 1873 -1946 (1896)

Mexico, September 19 - November 28, 1896 - Goldman, Edward Alphonso, 1873 -1946 (1896)

Meyers Konversations-Lexikon : eine Encyklopädie des allgemeinen Wissens - Meyer, Hermann Julius, 1826 -1909 (Verlag des Bibliographischen Instituts, 1890)

Micro-organisms in water : their significance, identification and removal - Frankland, Percy, 1858 -1946 (Longmans, 1894)

Micro-organisms in water : their significance, identification and removal, together with an account of the bacteriological methods employed in their investigaion, specially designed for the use of those connected with the sanitary aspects of water-supply - Frankland, Percy, 1858 -1946 (Longmans, Green, 1894)

Micro-organisms, with special reference to the etiology of the infective diseases - Cheyne, William Watson, Sir, 1852 -1932 (New Sydenham Society, 1890)

Micro-organisms with special reference to the etiology of the infective diseases - Cheyne, William Watson, Sir, 1852 -1932 (The New Sydenham society, 1890)

Microlepédoptera - Zeller, P. C. (Philipp Christoph), 1808 -1883 (s.n, 1852)

Midden-Sumatra. Reizen en onderzoekingen der Sumatra-expeditie, uitgerust door het Aardrijkskundig genootschap, 1877-1879, beschreven door de leden der expeditie, onder toezicht van Prof. P.J. Veth - Veth, Pieter Johannes, 1814 -1895 (E.J. Brill, 1881)

Midden-Sumatra. Reizen en onderzoekingen der Sumatra-expeditie, uitgerust door het Aardrijkskundig genootschap, 1877-1879, beschreven door de leden der expeditie, onder toezicht van Prof. P.J. Veth - Veth, Pieter Johannes, 1814 -1895 (E. J. Brill, 1881)

Midland naturalist - Birmingham Natural History; Microscopical Society (Birmingham, England) (Hardwicke and Bogue, 1879)

Miscellanea entomologica; revue entomologique internationale - Union entomologique. (1901)

Miscellaneous publication - University of Kansas, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1978)

Miscellaneous publications - University of Michigan. Museum of Zoology. (The University, 1916)

Mission du Service Geographique de l'Armée pour la mesure d'un arc de méridien équatorial en Amérique du Sud sous le contrôle scientifique de l'Académie des Sciences, 1899-1906 - France. (Gauthier-Villars, Imprimeur Libraire du Bureau des Longitudes, de l'Ecole Polytechnique, 1913)

Mission Pavie Indo-Chine, 1879-1895. Études diverses - Pavie, Auguste, 1847 -1925 (E. Leroux, 1898)

Mission scientifique au Mexique et dans l'Amérique Centrale : ouvrage publié par ordre de S.M. l'Empereur et par les soins du Ministre de l'instruction publique - Fournier, Eugène, 1834 -1884 (Imprimerie impériale, 1870)

Mission scientifique au Mexique et dans l'Amérique Centrale : ouvrage publié par ordre de S.M. l'Empereur et par les soins du Ministre de l'instruction publique - Fournier, Eugène, 1834 -1884 (Imprimerie impériale, 1868)

Mission scientifique du cap Horn, 1882-1883 - Mission scientifique du Cape Horn, 1882-1883. (Gauthier-Villars, 1891)

Mitteilungen aus dem Botanischen Museum der Universität Zürich - Universität Zürich. Botanisches Museum. (Botanisches Museum der Universität Zürich], 1914)

Mitteilungen aus dem Naturhistorischen Museum in Hamburg - Naturhistorisches Museum in Hamburg. (Lütcke & Wulff, 1914)

Mitteilungen aus dem Naturwissenschaftlichen Verein für Neuvorpommern und Rügen in Griefswald ... - Naturwissenschaftlicher Verein für Neuvorpommern und Rügen, Greifswald. (1869)

Mitteilungen aus dem Naturwissenschaftlichen Verein für Neuvorpommern und Rügen in Griefswald ... - Naturwissenschaftlicher Verein für Neuvorpommern und Rügen, Greifswald. (1882)

Mitteilungen aus dem Naturwissenschaftlichen Verein für Neuvorpommern und Rügen in Griefswald ... - Naturwissenschaftlicher Verein für Neuvorpommern und Rügen, Greifswald. (1890)

Mitteilungen aus dem Osterlande (1839)

Mitteilungen aus dem Zoologischen Museum in Berlin - Zoologisches Museum in Berlin. (In Kommission bei R. Friedländer, 1901)

Mitteilungen aus dem Zoologischen Museum in Berlin - Zoologisches Museum in Berlin. (In Kommission bei R. Friedländer, 1910)

Mitteilungen der Münchner Entomologischen Gesellschaft - Münchner Entomologische Gesellschaft. (Münchner Entomologische Gesellschaft, 1912)

Mitteilungen der Schweizerischen Entomologischen Gesellschaft = Bulletin de la Société entomologique suisse - Schweizerische Naturforschende Gesellschaft. (Schweizerische Entomologische Gesellschaft, 1867)

Mitteilungen der Schweizerischen Entomologischen Gesellschaft = Bulletin de la Société entomologique suisse - Schweizerische Naturforschende Gesellschaft. (Schweizerische Entomologische Gesellschaft, 1870)

Mitteilungen der Schweizerischen Entomologischen Gesellschaft = Bulletin de la Société entomologique suisse - Schweizerische Naturforschende Gesellschaft. (Schweizerische Entomologische Gesellschaft, 1879)

Mitteilungen der Schweizerischen Entomologischen Gesellschaft = Bulletin de la Société entomologique suisse - Schweizerische Naturforschende Gesellschaft. (Schweizerische Entomologische Gesellschaft, 1886)

Mittheilungen aus der Zoologischen Station zu Neapal - Stazione zoologica di Napoli. (Wilhelm Engelmann, 1882)

Mittheilungen des Münchener Entomologischen Vereins - Münchener Entomologischer Verein. (T. Ackermann, 1877)

Mittheilungen des Münchener Entomologischen Vereins - Münchener Entomologischer Verein. (T. Ackermann, 1880)

Mittheilungen des Ornithologischen Vereines in Wien - Ornithologischer Verein in Wien. (1889)

The Mollusca of the Firth of Clyde, being a catalogue of recent marine species found in that estuary - Brown, Alfred (Hugh Hopkins, 1878)

I molluschi dei terreni terziarii del Piemonte e della Liguria - Bellardi, Luigi, 1818 -1889 (Stamperia Reale, 1898)

Molluschi terrestri e d'acqua dolce viventi nel territorio di Esino - Pini, Napoleone. (Presso l'autore, 1876)

Monatsberichte der Königlichen Preussische Akademie des Wissenschaften zu Berlin - Königlich Preussische Akademie der Wissenschaften zu Berlin (Königliche Akademie der Wissenschaften, 1861)

Monatsberichte der Königlichen Preussische Akademie des Wissenschaften zu Berlin - Königlich Preussische Akademie der Wissenschaften zu Berlin (Königliche Akademie der Wissenschaften, 1880)

Monografia dei limacidi italiani - Lessona, Mario, 1855 -1911 (Ermanno Loescher, 1882)

A monograph of the coleopterous families Corylophidae and Sphaeriidae - Mason, Philip B. (O.E. Janson, 1899)

Monograph of the Collembola and Thysanura - Lubbock, John, Sir, 1834 -1913 (Printed for the Ray Society, 1873)

A monograph of the Culicidae, or mosquitoes. Mainly compiled from the collections received at the British museum from various parts of the world in connection with the investigation into the cause of malaria conducted by the Colonial office and the Royal society - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1901)

A monograph of the Culicidae, or mosquitoes. Mainly compiled from the collections received at the British museum from various parts of the world in connection with the investigation into the cause of malaria conducted by the Colonial office and the Royal society - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1903)

A monograph of the Culicidae, or mosquitoes. Mainly compiled from the collections received at the British museum from various parts of the world in connection with the investigation into the cause of malaria conducted by the Colonial office and the Royal society - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1907)

A monograph of the fresh-water univalve mollusca of the United States - Haldeman, Samuel Stehman, 1812 -1880 (Conchological Section of the Academy of Natural Sciences, 1870)

A monograph of the freshwater univalve mollusca of the United States, including notices of species in other parts of North America - Haldeman, Samuel Stehman, 1812 -1880 (1842)

A monograph of the jacamars and puff-birds, or families Galbulidæ and Bucconidæ - Sclater, Philip Lutley, 1829 -1913 (Published for the author by R.H. Porter [etc, 1882)

A monograph of the Limniades and other freshwater univalve shells of North America - Haldeman, Samuel Stehman, 1812 -1880 (J. Dobson, 1840)

A monograph of the Nectariniidae, or, Family of sun-birds - Shelley, G. E. (George Ernest), 1840 -1910 (Published by the author, 1876)

A monograph of the terrestrial Mollusca inhabiting the United States : with illustrations of all species - Tryon, George W., (George Washington), 1838 -1888 (The Author, 1866)

A monograph of the terrestrial Mollusca inhabiting the United States. With illustrations of all the species - Tryon, George W., (George Washington), 1838 -1888 (Published by the author, 1866)

Monograph on the Anguillulidae, or Free nematoids, marine, land, and freshwater, with descriptions of 100 new species - Linnean Society of London. (Linnean Society of London?, 1866)

Monographia anoplurorum britanniae; or, An essay on the British species of parasitic insects belonging to the order anoplura of Leach, with the modern divisions of the genera according to the views of Leach, Nitzsch and Burmeister, with highly magnified figures of each species - Denny, Henry, 1803 -1871 (H.G. Bohn, 1842)

Monographia anoplurorum Britanniae or An essay on the British species of parasitic insects belonging to the order of Anoplura of Leach, with the modern divisions of the general according to the views of Leach, Nitzsch, and Burmeister, with highly magnified figures of each species - Denny, Henry, 1803 -1871 (H. G. Bohn, 1842)

Monographia Anthocoridarum orbis terrestris ... - Reuter, Odo Morannal, 1850 -1913 (1884)

Monographia Caraborum Sveciæ - Paykull, Gustaf von, 1757 -1826 (Edman, 1790)

Monographia coleopterorum micropterorum - Gravenhorst, J. L. C. (Johann Ludwig Christian), 1777 -1857 (H. Dieterich, 1806)

Monographia coleopterorvm micropterorvm - Gravenhorst, J. L. C. (Johann Ludwig Christian), 1777 -1857 (typis H. Dieterich, 1806)

Monographie de la famille des anonacées - Dunal, Michel Félix, 1789 -1856 (Treuttel et Würtz, 1817)

Monographie de la famille des cactées : comprenant la synonymie, les diverses méthodes de classification proposées jusqu'à ce jour pour sa division en genres et sous-genres, et quelques notes sur la germination et la physiologie suivie d'un traité complet de culture et d'une table alphabétique des espèces et variétés - Labouret, J. (Dusacq, 1858)

Monographie der Endomychiden : einer Familie der Coleopteren - Gerstaecker, A. (Carl Eduard Adolph), 1828 -1895 (W. Engelmann, 1858)

Monographie der Familien der Pflanzenläuse (Phytophthires) - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (In Commission der Roschütz'schen Buchandlung, 1843)

Monographie der Familien der Pflanzenläuse (phytophthires). 1. Th, Die Blatt- und Erdläuse (Aphidina et Hyponomeutes) - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (Roschütz, 1843)

Monographie des Anthicus et genres voisins, coléptères hétéromères de la tribu des trachélides - La Ferté-Sénectère, F. de (Faustin), 1808 -1886 (Impr. de Sapia, 1848)

Monographie des coléoptères subpentamères de la famille des phytophages - Lacordaire, Théodore, 1801 -1870 (C. Muquardt, 1845)

Monographie des élatérides - Candèze, E. C. (Ernest Charles), 1827 -1898 (H. Dessain, 1857)