The mollusks of western North America - Carpenter, Philip P. (Philip Pearsall), 1819 -1877 (Smithsonian Institution, 1872)

The mollusks of western North America embracing the second report made to the British Association on this subject, with other papers, reprinted by permission, with a general index - British Association for the Advancement of Science. (Smithsonian Institution, 1872)

Les mollusques : introduction a l'étude de leur, organisation, développement, classification, affinités et principaux types - Coupin, Henri Eugène Victor, 1868 - (George Carré, 1892)

Les mollusques : organisation, développement, classification, affinités et principaux types - Coupin, Henri, 1868 -1937 (G. Carré et C. Naud, 1890)

Mollusques terrestres vivants du Piémont - Stabile, Giuseppe, 1826 -1869 (Impr. Bernardoni, 1864)

Mollusques vivants et fossiles - Orbigny, Alcide Dessalines d', 1802 -1857 (Adolphe Delahays, 1855)

Mollusques vivants et fossiles : ou, description de toutes les espèces de coquilles et de mollusques ; classées suivant leur distribution géologique et géographique - Orbigny, Alcide Dessalines d', 1802 -1857 (Gide et Cie., éditeurs, 1845)

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, 1872)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1890)

A monograph of the Foraminifera of the Crag - Sherborn, Charles Davies, 1861 -1942 (Printed for the Palaeontographical Society, 1866)

[Monograph of the genera and species of Pneumonopoma : a manuscript English translation by the author of his "Monographia Pneumonopomorum viventium, ...." - Gray, John Edward 1800 -1875 (1875)

[Monograph of the genera and species of Pneumonopoma : a manuscript English translation by the author of his "Monographia Pneumonopomorum viventium, ...." - Gray, John Edward 1800 -1875 (1858)

[Monograph of the genera and species of Pneumonopoma : a manuscript English translation by the author of his "Monographia Pneumonopomorum viventium, ...." - Gray, John Edward 1800 -1875 (1852)

[Monograph of the genera and species of Pneumonopoma : a manuscript English translation by the author of his "Monographia Pneumonopomorum viventium, ...." - Gray, John Edward 1800 -1875 (1865)

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)

A monograph on the Polychaeta of Southern Africa - Day, J. H. (British Museum (Natural History), 1967)

A monograph on the Polychaeta of southern Africa - Day, J. H. (BM(NH), 1967)

Monographia auriculaceorum viventium. Sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum, nec non fossilium enumeratione - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus Theodore Fischer, 1856)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1848)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1848)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1853)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1859)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1853)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1859)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium huius familiae generum et specierum hodie cognitarum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Brockhaus, 1877)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1868)

Monographia heliceorum viventium : sistens descriptiones systematicas et criticas omnium hujus familiae generum et specierum hodie cognitarum / auctore Ludovico Pfeiffer - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (1877)

Monographia pneumonopomorum viventium .... Supplementum secundum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (sumptibus T. Fischer, 1865)

Monographia pneumonopomorum viventium ... accedente fossilium enumeratione - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (sumptibus Theodori Fischer; [etc., etc.], 1852)

Monographia pneumonopomorum viventium .... Supplementum primum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (T. Fischer, 1858)

Monographia pneumonopomorum viventium .... Supplementum tertium monographiae auriculaceorum, parte secunda auctum - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (sumptibus T. Fischer, 1876)