Handbook of flower pollination based upon Hermann Müller's work 'The fertilisation of flowers by insects' - Knuth, Paul, 1854 -1899 (Clarendon Press, 1906)

Handbook of flower pollination based upon Hermann Müller's work The fertilisation of flowers by insects - Knuth, Paul, 1854 -1899 (Clarendon press, 1906)

Handbook of flower pollination based upon Hermann Müller's work The fertilisation of flowers by insects - Knuth, Paul, 1854 -1899 (Clarendon press, 1908)

Handbook of flower pollination based upon Hermann Müller's work The fertilisation of flowers by insects - Knuth, Paul, 1854 -1899 (Clarendon press, 1909)

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 Morphologie der wirbellosen Tiere - Lang, Arnold, 1855 -1914 (G. Fischer, 1913)

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)

Handbuch für Naturaliensammler : Eine Praxis der Naturgeschichte ; Mit 12 Farbtafeln, 31 Tafeln nach Zeichnungen, und Photographien, sowie 465 Textabbildungen nach Zeichnungen, Photographien und Mikrophotographien des Verfassers - Bade, E. (Fritz Pfenningstorff, 1913)

Handwörterbuch der naturwissenschaften - Verworn, Max, 1863 -1921 (G. Fischer, 1912)

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

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Robert Hardwicke, 1883)

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Robert Hardwicke, 1886)

Harriman Alaska series. vol. I-V, VIII-XIV - Smithsonian Institution (Smithsonian Institution, 1904)

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, 1903)

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, 1913)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1880)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1889)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1892)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1899)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1910)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1911)

Horae Societatis Entomologicae Rossicae, variis sermonibus in Rossia usitatis editae - Russkoe ėntomologicheskoe obshchestvo. (Typis V. Besobrasovi & Comp, 1914)

How to know the insects; an illustrated key to the more common families of insects, with suggestions for collecting, mounting and studying them - Jaques, H. E. (Harry Edwin), 1880 - (The author, 1941)

Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1887)

Hymenoptera ... - Morley, Claude 1874 -1951 (Taylor and Francis; [etc., etc.], 1913)

Hymenoptera europaea praecipue borealia : formis typicis nonnullis specierum generumve exoticorum aut extraneorum propter nexum systematicum associatis; per familias, genera, species et varietates disposita atque descripta - Dahlbom, Anders Gustav, 1806 -1859 (Ex officina Lundbergiana, 1843)