Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1874)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1885)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1886)

Proceedings of the American Academy of Arts and Sciences - American Academy of Arts; Sciences. (Metcalf and Co, 1890)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1911)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1984)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1873)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1877)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1901)

Proceedings of the California Academy of Sciences. 3rd ser., Botany - California Academy of Sciences (The Academy, 1897)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1926)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1927)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1949)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1948)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1865)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1868)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1872)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1892)

Proceedings of the Cotteswold Naturalists' Field Club - Cotteswold Naturalists' Field Club. (1904)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1864)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1865)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1896)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1909)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1958)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1930)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1984)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1988)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1989)

Proceedings of the Oklahoma Academy of Science - Oklahoma Academy of Science (Oklahoma Academy of Science, 1921)

Proceedings of the Philosophical Society of Glasgow - Philosophical Society of Glasgow.

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1898)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1909)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1911)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1912)

Proceedings of the Royal Physical Society of Edinburgh - Royal Physical Society of Edinburgh. (The Society, 1878)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1945)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1922)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1929)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1933)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1967)

Proceedings of the Washington Academy of Sciences - Washington Academy of Sciences (Washington, D.C.) (Washington Academy of Sciences, 1901)

Proceedings of the Yorkshire Geological and Polytechnic Society - Yorkshire Geological; Polytechnic Society. (Yorkshire Geological and Polytechnic Society, 1882)

Proceedings of the Yorkshire Geological and Polytechnic Society - Yorkshire Geological; Polytechnic Society. (Yorkshire Geological and Polytechnic Society, 1891)

Proceedings of the Yorkshire Geological Society - Yorkshire Geological Society. (Yorkshire Geological Society, 1909)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1883)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1886)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1889)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1920)

Prodrome de la flore belge - Wildeman, E. de (Emile), 1866 -1947 (A. Castaigne, 1898)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1909)

Publication - Smithsonian Institution. Institute of Social Anthropology (U.S. Govt. Print. Off, 1950)

[Publications] - Bureau of Government Laboratories - Philippines. Bureau of Government Laboratories. (Bureau of Public Printing, 1905)

Publications in botany - National Museum of Natural Sciences (Canada) (The Museum, 1980)

Publications - Puget Sound Biological Station - Puget Sound Biological Station. (Puget Sound Biological Station, University of Washington, 1915)

Publications - Puget Sound Biological Station - Puget Sound Biological Station. (Puget Sound Biological Station, University of Washington, 1918)

Puget Sound Marine Station publications - Puget Sound Marine Station (Puget Sound Marine Station, University of Washington?, 1915)

Puget Sound Marine Station publications - Puget Sound Marine Station (Puget Sound Marine Station, University of Washington?, 1916)

Puget Sound Marine Station publications - Puget Sound Marine Station (Puget Sound Marine Station, University of Washington?, 1917)