The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1951)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1953)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1954)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1955)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1956)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1957)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1960)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1963)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1964)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1965)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1966)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1967)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1970)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1971)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1972)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1974)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1976)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1979)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1980)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1982)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1985)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1988)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1989)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1990)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1991)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1992)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1996)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1997)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1998)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1999)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2000)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2002)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2005)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2008)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2010)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2012)

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The Canadian naturalist and geologist - Natural History Society of Montreal. (B. Dawson, 1864)

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The Canadian record of science - Natural History Society of Montreal. (Natural History Society, 1890)

The Canadian record of science - Natural History Society of Montreal. (Natural History Society, 1894)

The Canadian record of science - Natural History Society of Montreal. (Natural History Society, 1896)

The Canadian record of science - Natural History Society of Montreal. (Natural History Society, 1903)

Canotia - Arizona State University. Vascular Plant Herbarium. (Vascular Plant Herbarium, School of Life Sciences, Arizona State University, 2008)

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Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2008)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2009)

The care of natural monuments with special reference to Great Britain and Germany - Conwentz, Hugo, 1855 -1922 (University Press, 1909)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1915)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1916)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1921)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1922)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1927)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1928)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1942)

Caroli Linnaei Opera. Editio prima critica, plena, ad editiones veras exacta, textum nullo rei detrimento contractum locosque editionum discrepantes exhibens. Vol. 2., Systema vegetabilium; libros diagnostico-botanicos continens - Linné, Carl von, 1707 -1778 (Sumptum fecit O. Wigand, 1840)

Caroli Linnaei Systema, Genera, Species plantarum uno volumine : editio critica, adstricta, conferta, sive, Codex botanicus linnaeanus : textum linnaeanum intergrum ex omnibus Systematis, Generum, Specierum plantarum editionibus, mantissis, additamentis selectumque ex ceteris ejus botanicis libris digestum, collatum, contractum, cum plena editionum discrepantia exhibens - Linné, Carl von, 1707 -1778 (sumptum fecit O. Wigard, 1835)

Caroli Linnaei Systema, genera, species plantarum uno volumine : editio critica, adstricta, conferta, sive, Codex botanicus linnaeanus : textum linnaeanum integrum ex omnibus Systematis, Generum, Specierum plantarum editionibus, mantissis, additamentis selectumque ex ceteris ejus botanicis libris digestum, collatum, contractum, cum plena editionum discrepantia exhibens : in usum botanicorum practicum - Linné, Carl von, 1707 -1778 (Sumptum fecit O. Wigand, 1840)

Cascade-Siskiyou National Monument : draft resource management plan/environmental impact statement - United States. Bureau of Land Management. Medford District. (U.S. Department of the Interior, Bureau of Land Management, Medford District Office, 2002)

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Cassell's dictionary of practical gardening; an illustrated encyclopædia of practical horticulture for all classes - Wright, Walter P. (Walter Page), 1864 -1940 (Cassell and company, limited, 1902)

Cassell's popular gardening - Fish, D. T. (David Taylor), 1824 -1901 (Cassell & company, limited, 1884)

Cassell's popular gardening - Fish, D. T. (David Taylor), 1824 -1901 (Cassell, 1884)

Castilleja : the newsletter of the Wyoming Native Plant Society - Wyoming Native Plant Society. (Wyoming Native Plant Society, 1999)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1899)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1900)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1910)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1913)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1916)

[Catalog] - Kelsey, Harlan P. (Firm) (Keller Flower Gardens, 1917)

Catalog. No. 6 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1913)

Catalog 1921 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Littlefield-Wyman Nurseries, 1921)

Catalog 1958-1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clyde Robin, 1958)

Catalog 1959 to 1962 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clyde Robin, 1959)

A catalog and bibliography of the Buprestoidea of America north of Mexico - Nelson, Gayle H (Coleopterists Society, 2008)

Catalog and price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mitchell Nurseries, 1949)

Catalog and price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mitchell Nurseries, 1954)

Catalog and price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Mitchell Nurseries, 1955)

Catalog no. 34, spring and fall 1941 : 1.00 specials of everything that grows to beautify - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Shady Lawn Nursery, 1941)

A catalog of cultivated woody plants of the southeastern United States - Meyer, Frederick G. 1917 -2006 (U.S. Dept. of Agriculture, Agricultural Research Service, 1994)

Catalog of hardy trees and shrubs; a list of the woody plants in cultivation outdoors at the New York Botanical Garden in 1942. With notes, a map, and twenty illustrations - New York Botanical Garden (1943)

Catalog of hymenoptera in America north of Mexico - Krombein, Karl V. (Smithsonian Institution Press, 1979)