Guide to the insects of Connecticut - Wheeler, William Morton, 1865 -1937 (Printed for The State Geological and Natural History Survey, 1911)

A guide to the natural history of the Isle of Wight : a series of contributions by specialists relating to the various branches of natural history and kindred subjects - Morey, Frank, 1858 -1925 (The County Press, 1909)

Haandbog i den danske flora - Lange, Johan, 1818 -1898 (C.A. Reitzels forlag, 1864)

Haliburton flora : an annotated list of the vascular plants of the County of Haliburton, Ontario - Royal Ontario Museum. (Royal Ontario Museum, 1991)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1856)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1864)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1866)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1867)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1868)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1880)

Hamburger Garten- und Blumenzeitung (R. Kittler, 1888)

Hampden agricultural warehouse and seed store - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (B.L. Bragg Co, 1898)

Hampstead Hill : its structure, materials and sculpturing - Lobley, James Logan, 1834 -1913 (Roper and Drowley, 1889)

A hand-book to the flora of Ceylon : containing descriptions of all the species of flowering plants indigenous to the island, and notes on their history, distribution, and uses : with an atlas of plates illustrating some of the more interesting species - Hooker, Joseph Dalton, 1817 -1911 (Dulau, 1893)

Hand-list of herbaceous plants cultivated in the Royal Botanic Gardens (Printed for H. M. Stationery Off. by Darling, 1902)

A handbook for farmers and dairymen - Woll, F. W. (Fritz Wilhelm), 1865 -1922 (J. Wiley & sons; [etc., etc.], 1897)

A handbook for farmers and dairymen - Woll, F. W. (Fritz Wilhelm), 1865 -1922 (J. Wiley & sons; [etc., etc.], 1908)

A handbook for farmers and dairymen - Woll, F. W. (Fritz Wilhelm), 1865 -1922 (J. Wiley & sons, inc.; [etc., etc.], 1914)

A handbook for farmers and dairymen - Woll, F. W. (Fritz Wilhelm), 1865 -1922 (Chapman & Hall, 1900)

Handbook of flower pollination : based upon Hermann Müller's work ʻThe fertilisation of flowers by insectsʼ - 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, 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 grasses : treating of their structure, classification, geographical distribution and uses : also describing the British species and their habitats - Hutchinson, William, fl 1895 - (Swan Sonnenschien & Co, 1895)

Handbook of grasses, treating of their structure, classification, geographical distribution and uses, also describing the British species and their habitats - Hutchinson, William M. (S. Sonnenschein, 1910)

A handbook of Nebraska grasses; with illustrated keys for their identification, together with a general account of their structure and economic importance - Link, George K. K. (George Konrad Karl), 1888 - (1915)

Handbook of plants and general horticulture - Henderson, Peter. (1890)

A handbook of systematic botany - Warming, Eugenius, 1841 -1924 (Macmillan & Co, 1895)

A handbook of systematic botany - Warming, Eugenius, 1841 -1924 (Swan, 1904)

Handbook of the British flora, a description of the flowering plants and ferns indigenous to or naturalised in the British Isles. For use of beginners and amateurs - Hooker, Joseph Dalton, 1817 -1911 (L. Reeve & co, 1900)

Handbook of the British flora; a description of the flowering plants and ferns indigenous to, or naturalized in the British Isles. For the use of beginners and amateurs - Bentham, George, 1800 -1884 (L. Reeve, 1865)

Handbook of the British flora; a description of the flowering plants and ferns indigenous to, or naturalized in, the British Isles - Bentham, George, 1800 -1884 (L. Reeve, 1858)

Handbook of the British flora: a description of the flowering plants and ferns indigenous to, or naturalised in the British Isles. For the use of beginners and amateurs - Bentham, George, 1800 -1884 (L. Reeve, 1908)

Handbook of the British flora: a description of the flowering plants and ferns indigenous to, or naturalized in, the British Isles. For the use of beginners and amateurs. By George Bentham - Hooker, Joseph Dalton, 1817 -1911 (L. Reeve & Co, 1920)

Handbook of the British flora: a description of the flowering plants and ferns indigenous to, or naturalised in, the British Isles. For the use of beginners and amateurs - Bentham, George, 1800 -1884 (L. Reeve & Co., ltd, 1918)

Handbook of the flora of Philadelphia and vicinity, containing data relating to the plants within the following radius: eastern Pennsylvania; all of New Jersey except the northern counties; and New Castle County, Delaware, with keys for identification of species - Brown, Stewardson, 1867 -1921 (Philadelphia Botanical Club, 1905)

Handbook of the New Zealand flora : a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, and Macquarrie's islands - Hooker, Joseph Dalton, 1817 -1911 (Reeve & Co, 1867)

Handbook of the Torquay flora; comprising the flowering plants and ferns growing in and around Torquay, with their respective habitats - Stewart, Robert, M.R.C.S. (E. Croydon, Royal Library, 1860)

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

Handbuch der botanischen terminologie und systemkunde - Bischoff, Gottlieb Wilhelm, 1797 -1854 (1830)

Handbuch der Naturgeschichte aller drei Reiche, fur Lehrer and Lernende, fur Schule und Haus - Bromme, Traugott, 1802 -1866 (1850)

Handbuch der paläarktischen Gross-Schmetterlinge für Forscher und Sammler - Standfuss, Maximilian Rudolph, 1854 - (G. Fischer, 1896)

Handbuch der pathogenen Mikroorganismen. Unter Mitwirkung von Rudolf Abel [et al.] Hrsg. von W. Kolle und A. von Wassermann - Kolle, Wilhelm, 1868 -1935 (G. Fischer, 1912)

Handbuch der Pflanzenkrankheiten - Sorauer, Paul, 1839 -1916 (P. Parey, 1921)

Handbuch der Pflanzenkrankheiten : für Landwirthe, Gärtner und Forstleute - Sorauer, Paul, 1839 -1916 (Wiegandt, Hempel & Parey, 1874)

Handbuch der Pflanzenkrankheiten - Lindau, Gustav, 1866 -1923 (P. Parey, 1908)

Handbuch der praktischen Botanik : enthaltend die Geschichte, Beschreibung und Anwendung sämmtlicher in Deutschland wildwachsenden und in den Gärten und Gewächshäusern cultivierten Pflanzen - Voigt, F. S. (Friedrich Siegmund), 1781 -1850 (F. Mauke, 1850)

Handbuch der systematischen botanik, mit besonderer berücksichtigung der arzneipflanzen. Bd. 1 - Luerssen, Christian, 1843 -1916 (H. Haessel, 1879)

Handbuch für botanische Bestimmungsübungen - Niedenzu, Franz, 1857 -1937 (Engelmann, 1895)

Handlexikon der Naturwissenschaften und Medizin - Bechhold, H. (Heinrich), 1866 -1937 (Bechhold, 1919)

Handwörterbuch der Pharmakognosie des Pflanzenreichs - Wittstein, Georg Christian, 1810 -1887 (E. Trewendt, 1882)

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

A handy-book for the rambling botanist, suggesting what to look for and where to go in the out-door study of field flowers and ferns - Hibberd, Shirley, 1825 -1890 (Groombridge and Sons, 1873)

Happy hunting-grounds; a tribute to the woods and fields - Gibson, W. Hamilton (William Hamilton), 1850 -1896 (Harper & brothers, 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, 1868)

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, 1874)

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, 1877)

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, 1880)

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, 1892)

Harmon's seeds : agricultural tools, implements, woodenware, dairy and poultry supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (H.T. Harmon & Co, 1901)

Haupt, Preis liste der gangbarsten Gemüse, Gras, Blumen und landwirthschaftlichen Saaten : Herbst 1899, Frühjahr 1900 : No. 184, 30. Jahrgang - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Robra, 1899)

The Hawaiian forester and agriculturist - Hawaii. Board of Commissioners of Agriculture; Forestry. (Advertiser pub. co., ltd. [etc.], 1906)

Hedwigia (Verlag und Druck von C. Heinrich, 1869)

Hedwigia (Verlag und Druck von C. Heinrich, 1877)

Hedwigia (Verlag und Druck von C. Heinrich, 1882)

Hedwigia (Verlag und Druck von C. Heinrich, 1885)

Hedwigia (Verlag und Druck von C. Heinrich, 1899)

Hedwigia (Verlag und Druck von C. Heinrich, 1903)

Hedwigia (Verlag und Druck von C. Heinrich, 1914)

Hedwigia (Verlag und Druck von C. Heinrich, 1915)

De heide als handelsgewas en sierplant - Uikens, Th. F. (K. van Hulst, 1858)

Die Heimat - Verein Zur Pflege Der Natur- Und Landeskunde In Nordelbingen (Husum Druck- und Verlagsgesellschaft, 1896)

Heinrich Gottfried, Grafens von Mattuschka ... Flora Silesiaca, oder, Verzeichniss der in Schlesien wildwachsenden Pflanzen : nebst einer umständlichen Beschreibung derselben, ihres Nutzens und Gebrauches so wohl in Absicht auf die Arzney- als Haushaltungs-Wissenschaft - Mattuschka, Heinrich Gottfried, Graf von, 1734 -1779 (W.G. Korn, 1776)

Helios - Huth, Ernst, 1845 -1897 (R. Friedländer & Sohn, 1926)

Henderson's 1936 farmers manual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1936)

Henderson's 1937 farmers manual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1937)

Henderson's 1938 farmers manual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1938)

Henderson's American farmer's manual : 1893 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1893)

Henderson's American farmer's manual : 1897 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1897)

Henderson's farmer's manual : 1847-1912 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1912)

Henderson's farmer's manual : 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1906)

Henderson's farmers manual - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1923)

Henderson's farmers manual : 1916 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1916)

Henderson's farmers manual : 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1917)

Henderson's farmers manual : 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1918)

Henderson's farmers manual : 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1919)

Henderson's farmers manual : 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1920)

Henderson's farmers manual : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1924)

Henderson's farmers manual : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1935)

Henderson's farmers manual : 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1939)

Henderson's farmers manual : 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1940)

Henderson's farmers manual : 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1941)

Henderson's Hand-book of the grasses of Great Britain and America. Their generic and specific character, comparative nutritive value, soils best adapted for their cultivation, proper times and methods of sowing, approved mixtures and quantities usually sown, after management, etc - Henderson, John. (Journal Pub. Co, 1875)

Henderson's Hand-book of the grasses of Great Britain and America. Their generic and specific character - Henderson, John. (L. I., Journal publishing company, 1875)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1890)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1910)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & company, 1910)

Henderson's special list of farm seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1922)

The Henry Philipps Seed & Implement Co., growers, importers, wholesale & retail dealers in garden, field & flower seeds, 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Philipps Seed and Implement Co, 1915)

The Henry Philipps Seed and Implement Co. : growers importers wholesale & retail dealers in garden field & flower seeds 1911 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Philipps Seed and Implement Co, 1911)

The Henry Philipps Seed and Implement Co., importers and growers of garden, field and flower seeds, bulbs and plants : 1913 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Philipps Seed and Implement Co, 1913)

The Henry Philipps Seed and Implement Co., importers and growers of garden, field and flower seeds, bulbs and plants : 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Philipps Seed and Implement Co, 1910)

The Henry Philipps Seed and Implement Co., importers and growers of garden, field and flower seeds, bulbs and plants : 1908 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Henry Philipps Seed and Implement Co, 1908)

Herbariones upsalienses...:quas...sub praesidio viri nobilissimi Dn. Doct. Caroli Linnaei...alumnus regius Andreas N. Fornander - Linné, Carl von, 1707 -1778 (L.M. Hojer, 1753)

Herbarium Musei Fennici : enumeratio plantarum Musei Fennici - Helsingin yliopisto. Kasvimuseo. (Ex officina typographica H.J. Simelii, 1889)

Herbarium Pedemontanum; juxta methodum naturalem dispositum, additis nonnullis stirpibus exoticis ad universos ejusdem methodi ordines exhibendos - Colla, Luigi, 1766 -1848 (Ex Typis Regis, 1833)

Herbarium vivum, of Verzameling van gedroogde voorbeelden van nuttige gewassen - Maatschappij van nijverheid, Haarlem. (V. Loosjes, 1839)

Herbarium vivum, of Verzameling van gedroogde voorbeelden van nuttige gewassen - Maatschappij van nijverheid, Haarlem. (V. Loosjes, 1843)

Herborisations à Salève - Fauconnet, Charles, 1811 -1876 (Impr. Carey frères, 1867)

Herborisations dans le Jura central: Val de Travers, Creux-du-Van, Tourbières des Ponts et de la Brévine - Gillot, X. (Xavier), 1842 -1910 (Association typographique, 1891)

Les herborisations parisiennes; recherche, étude pratique et détermination facile des plantes qui croissent dans les environs de Paris - Baillon, H. (Henri), 1827 -1895 (O. Doin, 1890)

Der Hercynische Florenbezirk : Grundzüge der Pflanzenverbreitung im mitteldeutschen Berg- und Hügellande vom Harz bis zur Rhön, bis zur Lausitz und dem Böhmer Walde - Drude, Oscar, 1852 -1933 (W. Engelmann, 1902)