Handbuch der Blütenbiologie, unter Zugrundelegung von Herman Müllers Werk: "Die Befruchtung der Blumen durch Insekten." - Knuth, Paul, 1854 -1899 (W. Engelmann, 1898)

Handbuch der entomologie - Schröder, Christoph Wilhelm Marcus, 1871 - (Gustav Fischer, 1914)

Handbuch der entomologie - Schröder, Christoph Wilhelm Marcus, 1871 - (Gustav Fischer, 1921)

Handbuch der palaeontologie - Schimper, Wilhelm-Philippe, 1808 -1880 (R. Oldenbourg, 1881)

Handbuch der Zoologie - Peters, Wilhelm C. H. (Wilhelm C. Hartwig), 1815 -1883 (W. Engelmann, 1875)

Handbuch der Zoologie mit besonderer Berücksichtigung derjenigen Thiere, welch in Bezug auf Forst und Landwirthschaft, sowie hinsichtlich der Jagd vorzüglich wichtig sind ... Zweiter Theil Wirbellos Thiere ... - Döbner, Eduard Philipp, 1810 -1890 (Krebs, 1862)

Handbuch der zoologie - Carus, Julius Victor, 1823 -1903 (W. Engelmann, 1863)

Handwörterbuch der Zoologie - Dalla Torre, K. W. von (Karl Wilhelm), 1850 -1928 (F. Enke, 1887)

Historia naturalis bulgarica - Bŭlgarska akademii︠a︡ na naukite. (Bulgarska akademiia na naukite, 1999)

The Hope reports - Poulton, Edward Bagnall, Sir, 1856 -1943 (Printed for private circulation, 1897)

The Hope reports - Poulton, Edward Bagnall, Sir, 1856 -1943 (Printed for private circulation, 1908)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1867)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1885)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1897)

Hymenoptera of America north of Mexico : synoptic catalog - Krombein, Karl V. (U.S. Dept. of Agriculture, 1951)

Hymenoptera of America north of Mexico : synoptic catalog, first supplement - Krombein, Karl V. (U.S. Dept. of Agriculture, 1958)

Hymenoptera of America north of Mexico : synoptic catalog, second supplement - Krombein, Karl V. (U.S. Dept. of Agriculture, 1967)

Die Hymenopteren Deutschlands nach ihren Gattungen und theilweise nach ihren Arten als Wegweiser : für angehende Hymenopterologen und gleichzeitig als Verzeichniss der Halle'schen Hymenopterenfauna - Taschenberg, Ernst Ludwig, 1818 -1898 (Eduard Kummer, 1866)

Die hymenopteren Mitteleuropas nach ihren gattungen und zum grossen teil auch nach ihren arten analytisch - Schmiedeknecht, Otto, 1847 -1936 (G. Fischer, 1907)

Hymenopterologische studien - Foerster, Arn. (Arnold), 1810 -1884 (Ernst ter Meer, 1856)

I. Description of new buildings - Freer, Paul Caspar, 1862 -1912 (Bureau of Public Printing, 1905)

Iheringia. Série zoologia - Fundação Zoobotânica do Rio Grande do Sul. Museu de Ciências Naturais. (Museu Rio-Grandense de Ciências Naturais, Divisão de Ciências do Departamento de Ciência e Cultura, Secretaria de Estado dos Negócios da Educação e Cultura do Govêrno do Estado do Rio Grande do Sul, 1998)

An illustrated dictionary of scientific terms - Rossiter, William, 1897 (G. P. Putnam's Sons, 1878)

Illustrated natural history - Wood, J. G. (John George), 1827 -1889 (Home Bk. Co, 1880)

Illustrierte Wochenschrift für Entomologie - Berliner Entomologische Gesellschaft. (J. Neumann, 1896)

Illustrierte Zeitschrift für Entomologie - Allgemeine Entomologische Gesellschaft. (J. Neumann, 1899)

Illustrirtes Thierleben - Brehm, Alfred Edmund, 1829 -1884 (Verlag des Bibliogr. Instituts, 1869)

Immatures of exomalopsine bees with notes on nesting biology and a tribal key to mature larvae of noncorbiculate, nonparasitic Apinae (Hymenoptera, Apidae) - Rozen, Jerome G. Jr. (Jerome George), 1928 - (American Museum of Natural History, 2011)

Index to information on insects associated with western wildland shrubs - Nelson, David L. (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1988)

Index to the known fossil insects of the world : including myriopods and arachnids - Geological Survey (U.S.) (Department of the Interior, Geological Survey, 1891)

An index to the scientific contents of the Journal and Proceedings of the Academy of Natural Sciences of Philadelphia [1817-1910] Published in commemoration of the centenary of the academy, March 21, 1912 - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences, 1912)

Indian insect life : a manual of the insects of the plains (tropical India) - Maxwell-Lefroy, H. (Harold), 1877 -1925 (Thacker, Spink & Co., W. Thacker & Co., 2 Creed Lane, London, 1909)

Insect biodiversity and dead wood : proceedings of a symposium for the 22nd International Congress of Entomology - Hanula, James L. (James Lee), 1955 - (U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2006)

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, Doran & Co, 1916)

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, 1902)

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, Page, 1903)

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, Page, 1912)

The insect book : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, Page & Company, 1905)

The insect book a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (W. Briggs, 1901)

The insect book; a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies - Howard, L. O. (Leland Ossian), 1857 -1950 (Doubleday, Doran & company, 1937)

Insects at home : being a popular account of all those insects which are useful or destructive, and minutely describing their structure, habits, and transformations ... - Wood, J. G. (John George), 1827 -1889 (William Rutter & Company, 1873)

Insects in relation to national defense - United States. Office of Experiment Stations. (1944)

Insects in relation to national defense. Circular 15, Ants, wasps, and other insects - United States. Bureau of Entomology; Plant Quarantine. (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1943)

Insects in relation to national defense. Circular 23, Reference index - United States. Bureau of Entomology; Plant Quarantine. (U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine, 1944)

Insects of Eastern forests - United States. Department of Agriculture. (U.S. Forest Service ; for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1985)

Insects : their structure & life, a primer of entomology - Carpenter, George H. (George Herbert), 1865 -1939 (J.M. Dent, 1899)

Insekten-Börse (1906)

Das Insektenleben Österreichs ; mit einem Anhand über Gallen und ahnliche Pflanzenverustaltungen samt deren Erzeuger. Ein Handbuch und Wegweiser für Naturfreunde jeder Art - Mader, Leopold. (Hölder-Pichler-Tempsky, 1922)

International catalogue of scientific literature. N, Zoology - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1901)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1906)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1908)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1909)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1910)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1912)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1913)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1914)

International catalogue of scientific literature - Royal Society (Great Britain) (Published for the International Council by the Royal Society of London, 1916)

An introduction to entomology - Comstock, John Henry, 1849 -1931 (Comstock, 1949)

An introduction to entomology - Comstock, John Henry, 1849 -1931 (The Comstock publishing co, 1920)

An introduction to entomology - Comstock, John Henry, 1849 -1931 (The Comstock publishing co., inc, 1933)

An introduction to the modern classification of insects; founded on the natural habits and corresponding organisation of the different families - Westwood, J. O. (John Obadiah), 1805 -1893 (Longman, Orme, Brown, Green, and Longmans, 1840)

Invertebrata pacifica - Pomona College (Claremont, Calif.). Department of Biology. (1905)

Invertebrate conservation news - Amateur Entomologists' Society (Great Britain) (Amateur Entomologists' Society, 2003)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1837)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1840)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1844)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1846)

Isis von Oken - Oken, Lorenz, 1779 -1851 (Expedition der Isis, 1848)

Jahrbücher des Nassauischen Vereins für Naturkunde - Nassauischer Verein für Naturkunde (1857)

Jahrbücher des Nassauischen Vereins für Naturkunde - Nassauischer Verein für Naturkunde (1861)