Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1877)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1878)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1880)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1881)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1882)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1884)

Philosophical transactions. Series A: Mathematical and physical sciences - Royal Society (Great Britain) (1890)

PHS news - Pennsylvania Horticultural Society. (The Society, 1983)

The physical geology and geography of Great Britain : a manual of British geology - Woodward, Horace B. (Horace Bolingbroke), 1848 -1914 (E. Stanford, 1878)

Physiography : an introduction to the study of nature - Huxley, Thomas Henry, 1825 -1895 (Macmillan, 1877)

The Phytologist: a botanical journal - Irvine, Alexander, 1793 -1873 (William Pamplin, 1862)

The Phytologist: a popular botanical miscellany - Newman, Edward, 1801 -1876 (John van Voorst, 1850)

A pictorial atlas of fossil remains : consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology" - Mantell, Gideon Algernon, 1790 -1852 (H.G. Bohn, 1850)

The pinetum Britannicum : a descriptive account of hardy coniferous trees cultivated in Great Britain - Ravenscroft, Edward, 1816 -1890 (W. Blackwood & Sons, 1884)

Pioneers of science in America; sketches of their lives and scientific work - Youmans, William Jay, 1838 -1901 (D. Appleton, 1896)

The plant, an illustration of the organic life of the animal - Coultas, Harland, 1817 -1877 (Perry and Erety, 1855)

Plant geography - Boulger, George Simonds, 1853 -1922 (J. M. Dent & Son, 1912)

Plant life and evolution (H. Holt, 1911)

Plant-life - Hall, Charles A. (Charles Albert), 1872 -1965 (A. & C. Black, 1915)

Plant-life - Hall, Charles A. (Charles Albert), 1872 -1965 (Black, 1915)

Plant-life; popular papers on the phenomena of botany - Step, Edward, 1855 -1931 (M. Japp & company, 1881)

Plant life through the ages : a geological and botanical retrospect - Seward, A. C. (Albert Charles), 1863 -1941 (Hafner, 1933)

Plant morphology - Haupt, Arthur W. (Arthur Wing), 1894 - (McGraw-Hill, 1953)

The Plant world - Plant World Association. (Plant World Association [etc.], 1911)

Plant world; its past, present & future; an introd. to the study of botany - Massee, George, 1850 -1917 (Whittaker, 1891)

Plantarum vascularium genera :secundum ordines naturales digesta eorumque differentiae et affinitates tabulis diagnostacis expositae - Weidmann. (Libraria Weidmannia, 1836)

Les plantes - Faideau, Ferdinand, 1862 -1930? (Larousse, 1922)

Plants and their uses; an introduction to botany - Sargent, Frederick Leroy, 1863 -1928 (H. Holt and company, 1913)

Plants and their ways in South Africa - Stoneman, Bertha M., 1866 -1943 (Longmans, Green, 1915)

The playtime naturalist - Taylor, J. E. (John Ellor), 1837 -1895 (Chatto & Windus, 1889)

The Plough, the loom and the anvil - Skinner, John S. (John Stuart), 1788 -1851 (J.S. Skinner, 1848)

Poatkowé rostlinoslowí - Presl, Jan Svatopluk, 1791 -1849 (W kommissí u Kronbergra a iwnáe, 1848)

The Popular educator: a complete encyclopaedia of elementary, advanced and technical education (Cassell, 1888)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

Popular history of the palms and their allies, containing a familiar account of their structure, geographical and geological distribution, history, properties, and uses - Seemann, Berthold, 1825 -1871 (L. Reeve, 1856)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1873)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1879)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1880)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1881)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1890)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1892)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1895)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1872)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1899)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1910)

Popular Science Review (1862)

Popular Science Review (1865)

Popular Science Review (1866)

Popular Science Review (1867)

Popular Science Review (1869)

Popular Science Review (1872)

Popular Science Review (1873)

Popular Science Review (1876)

Popular Science Review (1878)

Practical geology - Harrison, William Jerome, 1845 -1909 (W. Stewart, 1878)

Preliminary catalogue of the flora of West Virginia - Millspaugh, Charles Frederick, 1854 -1923 (1892)

President's address and the sectional addresses. 1831 - British Association for the Advancement of Science. (1896)

President's address and the sectional addresses. 1831 - British Association for the Advancement of Science. (1922)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn, 1906)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & company, 1906)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & Company, 1906)

Principles of geology : or the modern changes of the earth and its inhabitants considered as illustrative of geology - Lyell, Charles, Sir, 1797 -1875 (John Murray, 1867)

Principles of stratigraphy - Grabau, Amadeus W. (Amadeus William), 1870 -1946 (A.G. Seiler and company, 1913)

Proceedings - Nova Scotian Institute of Science. (1866)

Proceedings - Dorset Natural History; Archaeological Society.

The Proceedings and transactions of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1894)

The Proceedings and transactions of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1898)

Proceedings and transactions of the Nova Scotian Institute of Natural Science - Nova Scotian Institute of Natural Science. (Nova Scotian Institute of Natural Science, 1883)

The Proceedings and transactions of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1902)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1885)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1889)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1895)

Proceedings and transactions of the Royal Society of Canada. Délibérations et mémoires de la Société royale du Canada - Royal Society of Canada. (Société royale du Canada, 1897)