Monograph of the naiades of Pennsylvania ... - Ortmann, Arnold E. 1863 -1927 (Board of Trustees of the Carnegie Institute, 1911)

Monograph of the naiades of Pennsylvania ... - Ortmann, Arnold E. 1863 -1927 (Board of Trustees of the Carnegie Institute, 1919)

A monograph of the Najades of Pennsylvania - Ortmann, Arnold E. 1863 -1927 (Published by the authority of the Board of Trustees of the Carnegie Institute, 1911)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1857)

Museum bulletin - New York State Museum. (University of the State of New York, 1907)

The muskrat - Lantz, David E. (David Ernest) (U.S. Dept. of Agriculture, 1910)

The mussel fauna of central and northern Minnesota - Wilson, Charles Branch, 1861 -1941 (Govt. print. off, 1914)

The mussel fauna of central and northern Minnesota - Wilson, Charles Branch, 1861 -1941 (G.P.O, 1914)

The mussel fauna of the Kankakee basin - Wilson, Charles Branch, 1861 -1941 (Govt. print. off, 1912)

The mussel fauna of the Maumee River - Wilson, Charles Branch, 1861 -1941 (Govt. print. off, 1912)

Mussel resources in tributaries of the upper Missouri river - Coker, R. E. (Robert Ervin), 1876 -1967 (Government Printing Office, 1915)

Mussel resources of the Holston and Clinch rivers of eastern Tennessee - Coker, R. E. (Robert Ervin), 1876 -1967 (Govt. print. off, 1912)

The mussel resources of the Illinois River - Danglade, Ernest, 1865 - (Govt. Print. Off, 1914)

Mussels of central and northern Minnesota - Wilson, Charles Branch, 1861 -1941 (G.P.O, 1912)

The mussels of the Big Buffalo fork of White River, Arkansas - Meek, Seth E. (Seth Eugene), 1859 -1914 (Govt. print. off, 1912)

The mussels of the Cumberland River and its tributaries - Wilson, Charles Branch, 1861 -1941 (Govt. print. off, 1914)

The mussels of the Cumberland River and its tributaries - Wilson, Charles Branch, 1861 -1941 (Govt. Print. Off, 1914)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1901)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1903)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1912)

Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft - Deutsche Malakozoologische Gesellschaft (Verlag W. Küchler, 1914)

The Naiades of Missouri - Utterback, William I. (University Press, 1916)

Name that animal; a guide to the identification of the common land and fresh-water animals of the United States, with special reference to the area east of the Rockies - Driver, Ernest Charles, 1899 - (1950)

National Boll Weevil Cooperative Control Program : final environmental impact statement-1991 - United States. Animal; Plant Health Inspection Service. (U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 1991)

National Boll Weevil Cooperative Control Program : implementation of the program in Alabama : 1991 supplement to the draft environmental impact statement of 1989 (APHIS DEIS 89-001) - United States. Animal; Plant Health Inspection Service. (U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 1991)

Natural history and propagation of fresh-water mussels - Clark, H. Walton (Howard Walton), 1870 -1941 (Govt. Print. Off, 1921)

The natural history of the Toronto region, Ontario, Canada - Glenny, George, 1793 -1874 (Canadian Institute, 1913)

The Natural history of the Toronto Region, Ontario, Canada - Faull, J. H. (Joseph Horace), 1870 -1961 (Canadian Institute, 1913)

La naturaleza; periódico científico del Museo Nacional de Historia Natural y de la Sociedad Mexicana de Historia Natural - Sociedad Mexicana de Historia Natural. (Impr. de I. Escalante, 1910)

A naturalist in the Great Lakes region - Downing, Elliot Rowland, 1868 -1944 (The University of Chicago Press, 1922)

A naturalist in the Great Lakes region - Downing, Elliot Rowland, 1868 -1944 (University of Chicago Press, 1922)

Naturalist's guide to the Americas - Ecological Society of America. Committee on the Preservation of Natural Conditions. (Williams & Wilkins, 1926)

Naturwissenschaftliche Wochenschrift - Deutsche Gesellschaft für Volkstümliche Naturkunde in Berlin. (G. Fischer [etc.], 1901)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1896)

The Nautilus - American Malacologists, Inc. (American Malacologists, inc., etc, 1897)