Outlines of British fungology; containing characters of above a thousand species of Fungi, and a complete list of all that have been described as natives of the British Isles - Berkeley, M. J. (Miles Joseph), 1803 -1889 (L. Reeve, 1860)

Outlines of classification and special morphology of plants - Balfour, Isaac Bayley, 1853 -1922 (Clarendon Press, 1887)

Outlines of classification and special morphology of plants - Goebel, K. (Karl), 1855 -1932 (Clarendon Press, 1887)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (Lippincott, 1874)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (J.B. Lippincott & co, 1869)

Outlines of physiology : human and comparative - Royal College of Physicians of Edinburgh. (Longmans, Green, 1867)

Outlines of physiology, human and comparative - Marshall, John, 1818 -1891 (Lea, 1868)

Outlines of plant life : with special reference to form and function - Barnes, Charles Reid, 1858 -1910 (Henry Holt and Company, 1900)

Outlines of practical histology - Rutherford, William. (Churchill, 1876)

Outlines of practical histology : a manual for students - Stirling, William, 1851 -1932 (P. Blakiston, Son & Co, 1893)

Overzicht der ziekten en beschadigingen van het blad bij Deli-tabak - Hunger, F. W. T. (Friedrich Wilhelm Tobias), 1874 -1952 (G. Kolff & Co, 1901)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

Oxidation-reduction potentials in bacteriology and biochemistry - Hewitt, L. F. (Williams and Wilkins, 1950)

Ozone in relation to storage of apples - Schomer, Harold A., 1906 - (U.S. Dept. of Agriculture, 1948)

Pacific science - University of Hawaii. (University Press of Hawaii, 1967)

Palaeontographica (Theodor Fischer, 1914)

Palladin's Plant physiology - Hopping, Aleita, 1890 - (P. Blakiston's son, 1926)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

Pamphlets - Council for Scientific; Industrial Research (Australia) (Govt. Printer, 1918)

Pamphlets on forestry in Nebraska (1900)

Pamphlets on silviculture (1899)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1947)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1988)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1993)

Papers in marine biology and oceanography (Pergamon Press, 1955)

Papers on bacteriology and allied subjects - Russell, H. L. (Harry Luman), 1866 -1954 (1921)

Papers on bacteriology and allied subjects, by former students of Harry Luman Russell - Russell, H. L. (Harry Luman), 1866 -1954 (1921)

Papers presented at the Celebration of the Twentieth Anniversary of the New York Botanical Garden, September 6-9, 1915. Published by the aid of the David Lydig Fund, bequethed by Charles P. Daly - New York Botanical Garden (1916)

I parassiti vegetali delle piante coltivate od utili - Ferraris, Teodoro. (Sineo & Bo, 1913)

Partial syllabic lists of the clinical morphologies of the blood, sputum, feces, skin, urine, vomitus, foods : including potable waters, ice and the air, and the clothing (after Salisbury) - Cutter, Ephraim, 1832 -1917 (The Ariston, 1888)

Pasteur et le transformisme - Blaringhem, Louis, 1878 -1958 (Masson et cie, 1923)

Pasteur; the history of a mind - Duclaux, Emile, 1840 -1904 (W.B. Saunders company, 1920)

Pasteur; the history of a mind - Duclaux, Emile, 1840 -1904 (W. B. Saunders Co, 1920)

Pasteur : the history of a mind - Duclaux, Emile, 1840 -1904 (W.B. Saunders, 1920)

Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology) - MacNeal, Ward J., 1881 -1946 (P. Blakiston's Son & Co, 1920)

Pathological mycology; an enquiry into the etiology of infective diseases, section 1. Methods - Hare, Arthur W. (Pentland, 1885)

Pathological mycology; an enquiry into the etiology of infective diseases - Hare, Arthur W. (Young J. Pentland, 1885)

A pathological survey of the Para rubber tree (Hevea brasiliensis) in the Amazon Valley - Weir, James R. (James Robert), 1882 -1943 (U.S. Dept. of Agriculture, 1926)

Pathologie interne - Cadéac, Célestin, 1858 -1952 (J.B. Baillière, 1909)

Patologia vegetale. Fanerogame parassite, mixomiceti, bacterii, ifomiceti od eumiceti (funghi) - Voglino, Pietro. (Unione tipografico-editrice [Gia ditta Pomba e c], 1905)

The Peanut, the unpredictable legume; a symposium - Arant, F. S. (Frank Selman), 1904 - (National Fertilizer Association, 1912)

Perspectives and horizons in microbiology, a symposium - Waksman, Selman A. (Selman Abraham), 1888 -1973 (Rutgers University Press, 1955)

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