Ornithological gazetteer of Colombia - Paynter, Raymond A. Jr. (Bird Dept., Museum of Comparative Zoology, Harvard University, 1997)

Ornithological gazetteer of Venezuela - Paynter, Raymond A. Jr. (Bird Dept., Museum of Comparative Zoology, Harvard University, 1982)

[Ornithological papers] - Seebohm, Henry, 1832 -1895 (1876)

[Ornithological papers] - Chicago Natural History Museum. (1909)

Palaeontographica Americana - Paleontological Research Institution (Ithaca, N.Y.) (Paleontological Research Institution, 1976)

Palaeontology - Palaeontological Association (Palaeontological Association, 1976)

Paxton's Botanical dictionary; comprising the names, history, and culture of all plants known in Britain; with a full explanation of technical terms. New ed. including all the new plants up to the present year - Paxton, Joseph, Sir, 1803 -1865 (Bradbury, Evans, & co, 1868)

Paxton's magazine of botany, and register of flowering plants - Paxton, Joseph, Sir, 1803 -1865 (Orr and Smith [etc.], 1848)

Personal narrative of explorations and incidents in Texas, New Mexico, California, Sonora, and Chihuahua, connected with the United States and Mexican boundary commission, during the years 1850, '51, '52, and '53 - Bartlett, John Russell, 1805 -1886 (D. Appleton & company, 1854)

Personal narrative of explorations and incidents in Texas, New Mexico, California, Sonora, and Chihuahua : connected with the United States and Mexican Boundary Commission, during the years 1850, '51, '52, and '53 - Bartlett, John Russell, 1805 -1886 (D. Appleton & Company, 1854)

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, by Alexander de Humboldt, and Aimé Bonpland - Humboldt, Alexander von, 1769 -1859 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1826)

Personal narrative of travels to the equinoctial regions of the new continent, during the years 1799-1804 by Alexander de Humboldt, and Aimé Bonpland : with maps, plans, &c - Humboldt, Alexander von, 1769 -1859 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1822)

Personal narrative of travels to the equinoctial regions of the new Continent during the years 1799-1804 by Alexander de Humboldt and Aimé Bonpland : with maps, plans &c - Humboldt, Alexander von, 1769 -1859 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1819)

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 the new Continent during the years 1799-1804 by Alexander de Humboldt and Aimé Bonpland : with maps, plans &c - Humboldt, Alexander von, 1769 -1859 (Printed for Longman, Hurst, Rees, Orme, and Brown, 1821)