Organisation, systematik und geographisches verhältniss der infusionsthierchen. Zwei vorträge, in der Akademie der wissenschaften zu Berlin gehalten in den jahren 1828 und 1830 - Ehrenberg, Christian Gottfried, 1795 -1876 (Druckerei der Königlichen akademie der wissenschaften, 1830)

Der Organismus der Infusionsthiere - Stein, Friedrich, 1818 -1885 (W. Engelmann, 1859)

Our farm crops. Being a popular scientific description of the cultivation, chemistry, diseases, remedies, &c., of the various crops cultivated in Great Britain and Ireland - Wilson, John, 1812 -1888 (Blackie and son, 1859)

Outlines of bacteriology (technical and agricultural) - Ellis, David, 1874 -1937 (Longmans, Green, and co, 1909)

Outlines of bacteriology (technical and agricultural) - Ellis, David, 1874 -1937 (Longmans, Green and co, 1909)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

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

The Pfizer handbook of microbial metabolites - Miller, Max W. (Blakiston Division, McGraw-Hill, 1961)

Die pflanzlichen Parasiten des menschlichen Körpers. Für Ärzte, Botaniker und Studirende zugleich als Anleitung in das Studium der niederen Organismen - Hallier, Ernst, 1831 -1904 (W. Engelmann, 1866)

Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (M. Hager, 1921)

Pharmaceutical journal and transactions - Pharmaceutical Society of Great Britain (J. & A. Churchill, 1868)

Phenomenon of local tissue reactivity and its immunological, pathological and clinical significance - Shwartzman, Gregory, 1896 - (P. B. Hoeber, inc, 1937)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1866)

Phycologia Germanica, d.i. Deutschlands Algen in bündigen Beschreibungen. Nebst einer Anleitung zum Untersuchen und Bestimmen dieser Gewächse für Anfänger - Kützing, Friedrich Traugott, 1807 -1893 (W. Köhne, 1845)

Physiological and pathological researches; being a reprint of the principal scientific writings of the late T. R. Lewis. In memoriam - Aitken, William, 1825 -1892 (Lewis Memorial Committee, 1888)

Physiology of bacteria - Rahn, Otto, 1881 -1957 (P. Blakiston's son & co., inc, 1932)

Phytologia - Moldenke, Harold N. (Harold Norman), 1909 -1996 (H.A. Gleason and H.N. Moldenke, 1981)

Phytopathologie. Die krankheiten der culturgewächse. Für land- und forstwirthe, gärtner und botaniker - Hallier, Ernst, 1831 -1904 (W. Engelmann, 1868)

Die Pilze (Fungi) von Tirol, Vorarlberg und Liechtenstein - Magnus, P. (Paul), 1844 -1914 (Verlag der Wagner'schen Universitts-Buchh, 1905)

Plantae diaphoricae florae Argentinae, ó, Revista sistemática de las plantas medicinales, alimenticias ó de alguna otra utilidad y de las venenosas, que son indígenas de la República Argentina ó que, originarias de otros países se cultivan ó se crian éspontáneamente en ella - Hieronymus, G. (Georg), 1846 -1921 (G. Kraft, 1882)

Plantenkunde voor Indië - Haak, J. (G. C. T. Van Dorp & Co, 1892)

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 Science Review (1868)

Practical bacteriology, microbiology and serum therapy (medical and veterinary) A text book for laboratory use - Besson, Albert, 1868 -1931 (Longmans, Green, and co, 1913)

The principles of bacteriology - Royal College of Physicians of Edinburgh. (Open Court, 1899)

The principles of bacteriology : a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea Brothers & Co, 1895)

The principles of bacteriology: a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea Brothers & Company, 1902)

The principles of bacteriology: a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea Brothers & Co, 1894)

The principles of bacteriology: a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea Brothers & Co, 1897)

The principles of bacteriology - Hueppe, Ferdinand Adolph Theophil, 1852 - (Open Court, 1899)

The principles of bacteriology : a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea, 1897)

The principles of bacteriology: a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea brothers & co, 1897)

The principles of bacteriology: a practical manual for students and physicians - Abbott, A. C. (Alexander Crever), 1860 -1935 (Lea brothers & co, 1895)

Principles of microbiology; a treatise on Bacteria, Fungi and Protozoa pathogenic for domesticated animals - Moore, Veranus A. (Veranus Alva), 1859 -1931 (Carpenter & company, 1912)

Principles of soil microbiology - Waksman, Selman A. (Selman Abraham), 1888 -1973 (Williams & Wilkins, 1927)

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Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1848)