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, 1906)

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

Handbook of medical entomology - Johannsen, O. A. (Oskar Augustus), 1870 -1961 (The Comstock Publishing Company, 1915)

Handbook of medical entomology - Johannsen, O. A. (Oskar Augustus), 1870 -1961 (Comstock Pub. Co, 1915)

Handbook of zoology - Hoeven, Jan van der, 1801 -1868 (University Press, 1856)

Handbook of zoology - Clark, William, 1788 -1855 (Longman, Brown, Green, Longmans, and Roberts, 1856)

Handbook to the natural history of Cambridgeshire - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (University press, 1904)

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