Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz - Rabenhorst, Ludwig, 1806 -1881 (E. Kummer, 1892)

Études sur le polymorphisme des champignons : influence du milieu - Beauverie, Jean, 1874 -1938 (J.-B. Baillière, 1900)

Education through nature study; foundations & methods - Munson, John P. (Kellogg, 1903)

The effects of inanition and malnutrition upon growth and structure - Jackson, Clarence Martin, 1875 -1947 (P. Blakiston's son & co, 1925)

Die einfachsten lebensformen. Systematische naturgeschichte der mikroskopischen süsswasserbewohner - Eyferth, B. (Bruno), 1826 -1897 (Gebrüder Haering, 1878)

Die einfachsten Lebensformen des Thier- und Pflanzenreiches : Naturgeschichte der mikroskopischenSüsswassbewohner - Eyferth, B. (Bruno), 1826 -1897 (Goeritz und zu Putlitz, 1885)

Einführung in die Biologie - Maas, Otto, 1867 -1916 (R. Oldenbourg, 1912)

Electron-microscopic structure of protozoa - Pitelka, Dorothy R. (Dorothy Riggs), 1920 - (Pergamon Press; [distributed in the Western Hemisphere by Macmillan, New York], 1963)

Die Elementarstructur und das Wachstum der lebenden Substanz - Wiesner, Julius, 1838 -1916 (A. Hölder, 1892)

Elementary botany - Atkinson, George Francis, 1854 -1918 (Holt, 1898)

Elementary botany - Atkinson, George Francis, 1854 -1918 (Holt, 1905)

Elementary botany - Atkinson, George Francis, 1854 -1918 (Holt, 1908)

Elementary botany - Atkinson, George Francis, 1854 -1918 (H. Holt and company, 1898)

Elementary botany - Atkinson, George Francis, 1854 -1918 (H. Holt, 1899)

Elementary botany - Atkinson, George Francis, 1854 -1918 (H. Holt, 1898)

An elementary course of botany : structural, physiological, and systematic - Henfrey, Arthur, 1819 -1859 (John Van Voorst, 1878)

An elementary text-book of botany - Vines, Sydney Howard, 1849 -1934 (S. Sonnenschein & co., lim, 1898)

Elementary text-book of zoology - Masterman, Arthur T (E. & S. Livingstone, 1902)

Elementary text-book of zoology - Claus, Carl, 1835 -1899 (Macmillan, 1884)

Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote - Claus, Carl, 1835 -1899 (Swan Sonnenschein & co, 1892)

Elementos de botánica, conformes al proggrama de la Universidad Mayor de la República entresacados de Payer, Sachs, Van Tieghem, Lanessan. 2. ed. corr. y aumentada por varios amantes de la ciencia, bajo la dirección del recopilador - León, Jacinto de, (Biblioteca Ilustrada de Andrés Ríus, 1884)

Elements of biology - Weisz, Paul B., 1921 - (McGraw-Hill Company of Canada, 1963)

The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms - Kellerman, W. A. (William Ashbrook), 1850 -1908 (J. E. Potter and Company, 1883)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (Allen, 1922)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (George Allen & Unwin Ltd, 1922)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (G. Allen & Unwin, 1923)

Elements of plant biology - Tansley, A. G., Sir, (Arthur George), 1871 -1955 (George Allen & Unwin ltd, 1922)

Elements of structural and systematic botany, for high schools and elementary college courses (Ginn, 1891)

Encyklopädie der mikrospischen Technik : mit besonderer Berücksichtigung der Färbelehre - Ehrlich, Paul, 1854 -1915 (Urban & Schwarzenberg, 1903)

English cyclopaedia, a new dictionary of universal knowledge - Knight, Charles, 1791 -1873 (Bradbury, 1854)

Entomological news - American Entomological Society. (American Entomological Society, 1996)

Entomological news - American Entomological Society. (American Entomological Society, 1998)

The Entomophthoreae of the United States - Thaxter, Roland, 1858 -1932 (Pub. by the Society, 1888)

Die Entstehung der Arten auf Grund von Vererben erwobener Eigenschaften nach den Gesetzen organischen Wachsens : Ein Beitrag zur einheitlichen Auffassung der Lebewelt - Eimer, Theodor, 1843 -1898 (G. Fischer, 1888)

Enumeratio systematica fungorum in omnium herbarum europaearum organis diversis hucusque observatorum mentione facta fontium litterariorum diagnoses eorum figurasque proferentium nec non praecipuorum eorum synonymorum numerorumque collectionum plurium venalium species enumeratas - Oudemans, C. A. J. A. (Cornelis Antoon Jan Abraham), 1825 -1906 (apud M. Nijhoff, 1919)

Ergebnisse und Fortschritte der Zoologie (G. Fischer, 1924)

Erwin Frink Smith : a story of North American plant pathology - Rodgers, Andrew Denny, 1900 - (American Philosophical Society, 1952)

The essentials of botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt and company, 1914)

The essentials of botany - Bessey, Charles E. (Charles Edwin), 1845 -1915 (H. Holt and company, 1893)

The essentials of botany - Bessey, Charles E. (Charles Edwin), 1845 -1915 (Holt, 1884)

The essentials of botany - Bessey, Charles E. (Charles Edwin), 1845 -1915 (H. Holt and company, 1896)

The essentials of botany - Bessey, Charles E. (Charles Edwin), 1845 -1915 (Holt, 1896)

Essentials of college botany - Bessey, Ernst Athearn, 1877 -1957 (H. Holt, 1914)

Études sur les infusoires et les rhizopodes - Claparède, René-Édouard, 1832 -1871 (H. Georg, 1868)

Études sur la infusoires et les rhizopodes - Claparède, René-Édouard, 1832 -1871 (H. Georg, Librairie de L'Institut, 1868)

Etudes sur les infusoires et les rhizopodes - Claparède, René-Édouard, 1832 -1871 (Kessmann, 1860)

An evaluation of Chester River oyster mortality - Cooney, Joseph J. (Gulf Breeze Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1979)

Evolution by atrophy in biology and sociology - Massart, Jean, 1865 -1925 (K. Paul, 1899)

Evolution of life - Chapman, Henry C. (Henry Cadwalader), 1845 -1909 (1873)

The evolution of plant life, lower forms - Massee, George, 1850 -1917 (Methuen & Co, 1891)

The evolution of sex - Thomson, J. Arthur (John Arthur), 1861 -1933 (W. Scott, 1889)

Experiment station record - United States. Office of Experiment Stations. (G.P.O, 1912)

Experiment station record - United States. Office of Experiment Stations. (G.P.O, 1916)

Experiment station record - United States. Office of Experiment Stations. (G.P.O, 1918)

Experiment station record - United States. Office of Experiment Stations. (G.P.O, 1897)

Experimental embryology, a manual of techniques and procedures - Rugh, Roberts, 1903 -1978 (Burgess Pub. Co, 1948)

Experimental embryology; techniques and procedures - Rugh, Roberts, 1903 -1978 (Burgess Pub. Co, 1962)

Experimental morphology - Davenport, Charles Benedict, 1866 -1944 (The Macmillan company, 1897)

Experimental morphology - Davenport, Charles Benedict, 1866 -1944 (MacMillan, 1908)

Experimental morphology - Davenport, Charles Benedict, 1866 -1944 (The Macmillan company, 1899)

Experimental morphology - Davenport, Charles Benedict, 1866 -1944 (The Macmillan Company, 1908)

Experiments in propagation of freshwater mussels of the Quadrula group - Howard, A. D. (Arthur Day), 1874 - (Govt. print. off, 1914)

Las familias mas importantes del reino vegetal, especialmente las que son de interes en la medicina, la agricultura e industria, o que estan representadas en la flora de Venezuela. Resúmen del curso de botánica sistemática, leido en la ilustre Universidad central - Ernst, Adolfo, 1832 -1899 (Impr. de Espinal e hijos, 1881)

Las familias vejetales representadas en la flora de Santo Domingo - Moscoso, R. M. (Liberia i Papeleria de Luis A. Weber, 1897)

Farlowia :a journal of cryptogamic botany (Farlow Library and Herbarium of Harvard University, 1943)

Farlowia :a journal of cryptogamic botany (Farlow Library and Herbarium of Harvard University, 1945)

Faune des vertébrés de la Suisse - Fatio, Victor, 1838 -1906 (H. Georg, 1890)