Hoya pollinaria : a photographic study - Kloppenburg, Dale (D. Kloppenburg, 2018)

Hoya section sperlingia (vahl) miquel - Kloppenburg, Dale (D. Kloppenburg, 2001)

Hoya sections : a complete study with modifications and additions - Kloppenburg, Dale (D. Kloppenburg, 1990)

hua bei jing ji zhi wu zhi yao - Cui, Youwen. (zhong guo ke xue yuan chu ban)

H.W. Williams & Sons' wholesale price list of plants : 1891 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.W. Williams & Sons, 1891)

Hydrographic manual - U.S. Coast; Geodetic Survey (U. S. Govt. Print. Off, 1942)

The hylid frogs of Middle America - Duellman, William E. (William Edward), 1930 - (University of Kansas, 1970)

I. H. Burkill diary, 1913-1925 - Burkill. I. H. (Isaac Henry), 1870 -1965 (1925)

Iberus : revista de la Sociedad Española de Malacología - Sociedad Española de Malacología. (La Sociedad, 1990)

Iberus : revista de la Sociedad Española de Malacología - Sociedad Española de Malacología. (La Sociedad, 1995)

Iberus : revista de la Sociedad Española de Malacología - Sociedad Española de Malacología. (La Sociedad, 2005)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1904)

Ibis - British Ornithologists' Union (Published for the British Ornithologists' Union by Academic Press, 1912)

Icones Bogorienses - Kebun Raya Indonesia. (E. J. Brill, 1909)

Icones Bogorienses - Kebun Raya Indonesia. (E. J. Brill, 1908)

Icones plantarum asiaticarum - Griffith, William, 1810 -1845 (Bishop's College Press, 1854)

Icones plantarum formosanarum nec non et contributiones ad floram formosanam; or, Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa - Taiwan. Shokusankyoku. (Pub. by the Bureau of Productive Industry, Government of Formosa, 1921)

Icones plantarum formosanarum nec non et contributiones ad floram formosanam : or, Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa - Taiwan. Shokusankyoku. (Bureau of Productive Industry, Government of Formosa, 1911)

Icones plantarum Formosanarum nec non et contributiones ad floram Formosanam; or, Icones of the plants of Formosa, and materials for a flora of the Island, based on a study of the collections of the Botanical Survey of the Government of Formosa - Hayata, Bunzō, 1874 -1934 (Published by the Bureau of Productive Industries, Government of Formosa, 1911)

Icones plantarum Indiae Orientalis :or figures of Indian plants - Wight, Robert, 1796 -1872 (published by J.B. Pharoah for the author, 1843)

Icones plantarum Indiae Orientalis :or figures of Indian plants - Wight, Robert, 1796 -1872 (published by J.B. Pharoah for the author, 1850)

Icones plantarum or figures, with brief descriptive characters and remarks, of new or rare plants, selected from the author's herbarium - Hooker, Joseph Dalton, 1817 -1911 (Longman, Rees, Orme, Brown, Green, & Longman, etc, 1883)

Icones plantarum or figures, with brief descriptive characters and remarks, of new or rare plants, selected from the author's herbarium - Hooker, Joseph Dalton, 1817 -1911 (Longman, Rees, Orme, Brown, Green, & Longman, etc, 1894)

Icones plantarum or figures, with brief descriptive characters and remarks, of new or rare plants, selected from the author's herbarium - Hooker, Joseph Dalton, 1817 -1911 (Longman, Rees, Orme, Brown, Green, & Longman, etc, 1919)

Iconographia familiarum naturalium regni vegetabilis = Abbildungen der natürlichen Familien des Gewächsreiches : delineata atque adiectis familiarum characteribus adnotationibusque variis tum scientiam tum usum spectantibus exornata - Schnizlein, Adalbert, 1814 -1868 (M. Cohen, 1843)

Iconographic encyclopaedia of science, literature, and art - Baird, Spencer Fullerton, 1823 -1887 (R. Garrigue, 1851)