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A manual of the Mollusca; being a treatise on recent and fossil shells - Woodward, S. P. (Samuel Peckworth), 1821 -1865 (C. Lockwood, 1880)

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Manual of the more common flowering plants growing without cultivation in Bernalillo County, New Mexico - Watson, J. R. (John R.) (University of New Mexico, 1908)

Manual of the New Zealand flora - Cheeseman, T. F. (Thomas Frederick), 1846 -1923 (Govt. Printer, 1925)

Manual of the southeastern flora :being descriptions of the seed plants growing naturally in Florida, Alabama, Mississippi, eastern Louisiana, Tennessee, North Carolina, South Carolina and Georgia - Small, John Kunkel, 1869 -1938 (The author, 1933)

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A manual of weeds, with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control - Georgia, Ada Eljiva, 1859 - (The Macmillan Company, 1916)

A manual of weeds, with descriptions of all the most pernicious and troublesome plants in the United States and Canada - Georgia, Ada Eljiva, 1859 - (The Macmillan company, 1914)

A manual on window gardening - Holmes, James H. (J. H. Holmes, 1877)

The Marine Mammal Commission compendium of selected treaties, international agreements, and other relevant documents on marine resources, wildlife, and the environment - U.S. Fish; Wildlife Service (The Commission, 1994)

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Maryland naturalist - Natural History Society of Maryland (The Society, 2003)

Maryland naturalist - Natural History Society of Maryland (The Society, 2012)

A materia medica: Animalia, containing the scientific analysis, natural history and chemical and medical properties and uses of the substances that are the products of beasts, birds, fishes or insects ... - Good, Peter P. (Peter Peyto), 1789 -1875 (The author, 1853)

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Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1904)

Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1921)

Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1917)

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

Meddelelser om Grønland - Denmark. Kommissionen for ledelsen af de geologiske og geografiske undersøgelser i Grønland. (C. A. Reitzels Forlag, 1925)

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Medicinal plants. Being descriptions with original figures of the principal plants employed in medicine and an account of the characters, properties, and uses of their parts and products of medicinal value - Trimen, Henry, 1843 -1896 (J. & A. Churchill, 1880)

Medicinal uses of plants by Indian tribes of Nevada - Archer, W. Andrew (William Andrew), 1894 -1973 (Plant Industry Station, 1957)

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Medicinal uses of plants by Indian tribes of Nevada. Part I, (pages 1-61) - Archer, W. Andrew (William Andrew), 1894 -1973 (Division of Plant Exploration and Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1941)

Medicinal uses of plants by Indian tribes of Nevada. Part II, (pages 62-129) - Archer, W. Andrew (William Andrew), 1894 -1973 (Division of Plant Exploration and Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1941)

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Mélanges biologiques tirés du Bulletin de l'Académie impériale des sciences de St. Pétersbourg - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Eggers et comp, 1861)

Mélanges biologiques tirés du Bulletin de l'Académie impériale des sciences de St. Pétersbourg - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Eggers et comp, 1865)

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Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. 6e série. Seconde partie, Sciences naturelles - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) ([Académie impériale des sciences de St.-Pétersbourg], 1845)

Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. 7e série - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (L'Académie, 1868)