How plants grow... - Gray, Asa, 1810 -1888 (A. Miller, 1858)

How plants grow a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants, both wild and cultivated : illustrated by 500 wood engravings - Gray, Asa, 1810 -1888 (A. Miller, 1858)

How to know and use the trees - Coker, William Chambers, 1872 -1953 (University of North Carolina Press, 1924)

How to make a country place; an account of the successes and the mistakes of an amateur in thirty-five years of farming, building and development: together with a practical plan for securing a home and an independent income, starting with small capital - Sawyer, Joseph Dillaway. (Orange Judd company; [etc., etc.], 1914)

How to make a country place; an account of the successes and the mistakes of an amateur in thirty-five years of farming, building, and development - Sawyer, Joseph Dillaway. (Orange Judd company; [etc., etc.], 1914)

How to make a flower garden; a manual of practical information and suggestions - Miller, Wilhelm, 1869 - (Doubleday, Page & company, 1903)

How to mount and label hard-bodied insects - Gray, Alice, 1914 -1994 (Dept. of Insects and Spiders, American Museum of Natural History, 1947)

How to study plants - Wood, Alphonso, 1810 -1881 (American book company, 1895)

How to study plants : or, introduction to botany, being an illustrated flora - Wood, Alphonso, 1810 -1881 (American Book Co, 1882)

How to study plants : or, Introduction to botany, being an illustrated flora - Wood, Alphonso, 1810 -1881 (Barnes, 1882)

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

Humboldt; Monatsschrift für die gesamten Naturwissenschaften - Damer, Otto, 1839 -1916 (F. Enke, 1882)

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)

The identification of important North American oak woods, based on a study of the anatomy of the secondary wood - Mell, Clayton Dissinger, (Govt. print. off, 1911)

Identification of the economic woods of the United States : including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (J. Wiley & Son, 1912)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (John Wiley & sons, inc.; [etc., etc. ], 1919)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (J. Wiley & Sons, 1919)

Identification of the economic woods of the United States; including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (Wiley, 1919)

Identification of the economic woods of the United States, including a discussion of the structural and physical properties of wood - Record, Samuel J. (Samuel James), 1881 -1945 (John Wiley & sons, inc.; [etc., etc.], 1919)

I.E. Ilgenfritz' Sons Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (I.E. Ilgenfritz Sons & Co, 1925)

IES newsletter - Institute of Ecosystem Studies (New York Botanical Garden) (New York Botanical Garden, Institute of Ecosystem Studies, Mary Flagler Cary Arboretum, 1985)

L'Ile Ste. Hélène, passé, présent et avenir gé ologie, paléontologie, flore et faune - Achintre, A. (Auguste), 1834 -1886 (Le National, 1876)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1942)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1949)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1979)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1982)

Illinois biological monographs - University of Illinois at Urbana-Champaign. (Univ. of Illinois Press, 1997)

Illinois birds, Corvidae - Illinois. Natural History Survey Division (State of Illinois, Dept. of Energy and Natural Resources, Natural History Survey Division, 1987)

Illinois' forest resource - Raile, Gerhard K. (U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1988)

Illinois forest statistics, 1985 - North Central Forest Experiment Station (Saint Paul, Minn.) (U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1987)

Illinois' forests in 1998 - United States. Forest Service. (U.S. Dept. of Agriculture, Forest Service, North Central Research Station, 2000)

Illinois Natural History Survey bulletin - Illinois. Natural History Survey Division (The Survey, 2007)

Illinois River Bluffs area assessment - Illinois. Dept. of Natural Resources. (Illinois Dept. of Natural Resources, 1998)

Illinois trees: selection, planting, and care - Carter, J. Cedric (James Cedric), 1905 -1981 (1966)

An illustrated catalogue of American insect galls - Felt, Ephraim Porter, 1868 -1943 (1915)

Illustrated catalogue of microscopes, objectives, and accessories manufactured by Bausch & Lomb Optical Co - Bausch & Lomb Optical Company. (Press of A.J. Wegman, 1892)

The illustrated dictionary of gardening :a practical and scientific encyclopædia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L.U. Gill, 1884)

The Illustrated dictionary of gardening : a practical and scientific encyclopaedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. Upcott Gill, 1887)

The illustrated dictionary of gardening, a practical and scientific encyclopedia of horticulture for gardeners and botanists - Nicholson, George, 1847 -1908 (L. U. Gill, 1884)

An illustrated dictionary of medicine, biology and allied sciences - Gould, George M. (George Milbry), 1848 -1922 (Balliére, Tindall & Cox, 1894)

An illustrated dictionary of medicine, biology and allied sciences - Gould, George M. (George Milbry), 1848 -1922 (P. Blakiston's Son & Co, 1900)

An illustrated dictionary of medicine, biology and allied sciences ... by George M. Gould. 5th ed., with additions and corrections - Gould, George M. (George Milbry), 1848 -1922 (P. Blakiston's Son, 1907)