The past and present life of the globe. Being a sketch in outline of the world's life-system - Page, David, 1814 -1879 (W. Blackwood and sons, 1861)

The people's natural history, embracing Living animals of the world and Living races of mankind - Cornish, C. J. (Charles John), 1858 -1906 (The University society, 1903)

Perfil botánico-geológico de la carretera México-Acapulco - Mexico Secretaria de la Economia Nacional. Oficina de Geografia Economica (Talleres Gráficos de la Nación, 1935)

Personal narrative of travels to the equinoctial regions of America, during the years 1799-1804 - Humboldt, Alexander von, 1769 -1859 (G. Bell, 1907)

Personal narrative of travels to the equinoctial regions of the New continent during the years 1799-1804 - Humboldt, Alexander von, 1769 -1859 (G. Bell, 1877)

Personal narrative of travels to the equinoctial regions of America during the years 1799 - 1804 - Humboldt, Alexander von, 1769 -1859 (George Routledge, 1895)

Personal narrative of travels to the equinoctial regions of America, during the year 1799-1804 - Humboldt, Alexander von, 1769 -1859 (Bohn, 1852)

Perú: Cordillera Escalera-Loreto - Stotz, Douglas F. (Douglas Forrester), 1956 - (The Field Museum, Science and Education, 2014)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Petrefacten-Buch oder allgemeine und besondere Versteinerungskunde : mit Berücksichtigung der Lagerungsverhältnisse, besonders in Deutschland - Schmidt, F. A. (Hoffmann'sche Verlags-Buchhandlung, 1846)

Petrefactenbuch, oder allgemeine und besondere Versteinerungskunde mit Berücksichtigung der Lagerungs-Verhältnisse, besonders in Deutschland - Schmidt, F. A. (Krais & Hoffmann, 1855)

Petrifactions and their teachings, or, A hand-book to the gallery of organic remains of the British Museum - British Museum (Natural History). Department of Zoology. (H.G. Bohn, 1851)

Pets; their history and care - Crandall, Lee S. (Lee Saunders), 1887 -1969 (H. Holt and company, 1917)

Pets : their history and care. With illus. from life - Crandall, Lee S. (Lee Saunders), 1887 -1969 (Holt, 1917)

Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (M. Hager, 1922)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain (J. & A. Churchill, 1863)

Phases of animal life, past and present - Lydekker, Richard, 1849 -1915 (Longmans, Green, and Co, 1892)

The philosophical history and memoirs of the Royal Academy of Sciences at Paris: or, An abridgment of all the papers relating to natural philosophy, which have been publish'd by the members of that illustrious society for the year 1699 to 1720. With many curious observations relating to the natural history and anatomy of animals, &c. Illustrated with copper-plates. The whole translated and abridged - Académie des sciences (France) (J. & P. Knapton [etc.], 1742)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1824)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1827)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1829)

The Philosophical transactions of the Royal society of London, from their commencement in 1665, in the year 1800 - Royal Society (Great Britain) (Printed by and for C. and R. Baldwin, 1809)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1708)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1737)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1786)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1825)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1841)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1848)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1849)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1850)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1851)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1867)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1869)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1879)

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, 1883)

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

The philosophy of zoology, or, A general view of the structure, functions, and classification of animals - Fleming, John, 1785 -1857 (Hurst, Robinson & Co, 1822)

The philosophy of zoology; or, A general view of the structure, functions, and classification of animals - Fleming, John, 1785 -1857 (A. Constable, 1822)

Phlebotomine sand flies (Diptera: Psychodidae) and diffuse cutaneous leishmaniasis in the Dominican Republic - Johnson, Richard Nicholas, 1956 - (1984)

A Phylogenetic analysis and taxonomy of iguanian lizards (Reptilia, Squamata) - Etheridge, Richard, 1929 - (University of Kansas, 1989)

Phylogenetic analysis and taxonomy of the Tropidurus group of lizards (Iguania, Tropiduridae) - Frost, Darrel R. (American Museum of Natural History, 1992)

Phylogenetic systematics of iguanine lizards : a comparative osteological study - De Queiroz, Kevin (University of California Press, 1987)

Physica sacra - Scheuchzer, Johann Jakob, 1672 -1733 (Christian Ulrich Wagner], 1731)

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

Physiological chemistry - Day, George Edward, 1815 -1872 (Printed for the Cavendish Society, by Harrison and Son, 1851)

A physiological essay on the thymus gland - Brodie, Benjamin, Sir, 1783 -1862 (Henry Renshaw, 1845)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1968)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1985)