Contribution to knowledge of the marine algae of Norway. I, East-Finmarken - Foslie, Mikal Heggelund, 1855 -1909 (Tromsöpostens print. office, 1890)

A contribution to the botany of the Isle of Pines, Cuba, based upon the specimens of plants from that island contained in the herbarium of the Carnegie Museum under date of October, 1916 - Jennings, Otto E. (Otto Emery), 1877 -1964 (1917)

A contribution to the history of the fresh-water algae of North America - Wood, H. C. (Horatio C.), 1841 -1920 (Smithsonian Institution, 1872)

A contribution to the history of the fresh-water algœ of North America - Wood, H. C. (Horatio C.), 1841 -1920 (Smithsonian institution, 1872)

Contributiones ad algologiam et fungologiam - Reinsch, Paul Friedrich, 1836 -1914 (T. O. Weigel, 1875)

Contributions à la flore algologique de la Tripolitaine et de la Cyrénaïque - Forti, Achille, 1878 -1937 (Masson, 1916)

Contributions from the Bermuda Biological Station for Research - Bermuda Biological Station for Research. ([s.n.], 1917)

Contributions from the Botanical Laboratory - University of Pennsylvania. Botanical Laboratory. (University of Pennsylvania Press, 1892)

Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania - University of Pennsylvania. Botanical Laboratory. ([s.n, 1934)

Contributions from the Botanical Laboratory of the University of Pennsylvania - University of Pennsylvania. Botanical Laboratory. (University of Pennsylvania Press, 1898)

Contributions from the Hull Botanical Laboratory - Hull Botanical Laboratory. (University of Chicago Press, 1908)

Contributions from the New South Wales National Herbarium - New South Wales National Herbarium. (V.C.N. Blight, Govt. Printer, 1966)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1909)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1893)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1905)

Contributions from the University of Michigan Herbarium - University of Michigan. University Herbarium. (University Herbarium, University of Michigan, 1969)

Contributions from the University of Michigan Herbarium - University of Michigan. University Herbarium. (University Herbarium, University of Michigan, 1972)

Contributions from the University of Michigan Herbarium - University of Michigan. University Herbarium. (University Herbarium, University of Michigan, 1980)

Contributions from the University of Michigan Herbarium - University of Michigan. University Herbarium. (University Herbarium, University of Michigan, 1993)

Contributions from the University of Michigan Herbarium - University of Michigan. University Herbarium. (University Herbarium, University of Michigan, 1995)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1957)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1959)

Contributions to Canadian biology - Biological Board of Canada. (Biological Board of Canada, 1914)

Contributions to Canadian biology - Biological Board of Canada. (Biological Board of Canada, 1915)

Contributions to Canadian biology and fisheries - Biological Board of Canada. (1901)

Contributions to Canadian biology : being studies from the Marine Biological Station of Canada - Canada. Department of Marine; Fisheries. (s.n.], 1901)

Contributions to the biology of the Danish Culicid - Wesenberg-Lund, C. (Carl), 1867 -1955 (A. F. Høst & søn, 1920)

Contributions to the biology of the Danish Culicidae - Wesenberg-Lund, C. (Carl), 1867 -1955 (A.F. Host & Son, 1920)

Contributions to the flora of Iowa; a catalogue of the phaenogamous plants - Arthur, Joseph Charles, 1850 -1942 (Intelligencer Book Print, 1876)

Contributions to the Queensland flora - Bailey, Frederick Manson 1827 -1915 (Anthony James Cumming, Govt. Printer, 1890)

Coral Reefs of the World (1988)

Cottage gardener and country gentleman's companion (Wm. S. Orr, 1854)

The cottage gardener, country gentleman's companion and poultry chronicle (G.W. Johnson, 1857)

The cottage gardener, country gentleman's companion and poultry chronicle (G.W. Johnson, 1858)

A course of practical instruction in botany - Bower, F. O. (Frederick Orpen), 1855 -1948 (Macmillan, 1891)

The crane-flies of New York - Alexander, Charles P. (Charles Paul), 1889 -1981 (1920)

The crane-flies of New York. Part II. Biology and phylogeny - Alexander, Charles P. (Charles Paul), 1889 -1981 (1920)

A craspedomonadinák szervezete = Der Organismus der Craspedomonaden / irta Francé Rezső - Francé, R. H. (Raoul Heinrich), 1874 -1943 (Kir. M. Természettudományi társulat, 1897)

Crociera del Corsaro alle isole Madera e Canarie del capitano Enrico D'Albertis. Alghe - Piccone, Antonio, 1844 -1901 (Tip. de R. Istituto sordo-muti, 1884)

Crop protection - Alberta. Alberta Agriculture, Food,; Rural Development. (Alberta Agriculture, Food and Rural Development, 1999)

The cruise of the Nelly. Summer wanderings of a marine zoologist, on the coasts of the British islands - Hooper, Benjamin (Tubbs and Brook, 1871)

Cryptogamen - Schenck, Heinrich, 1860 -1927 (G. Fischer, 1902)

Cryptogamic botany - Cardot, Jules, 1860 -1934 (The Smithsonian Institution, 1910)

Cryptogamic botany of the Antarctic voyage of H.M. Discovery ships Erebus and Terror in the years 1839-1843 under the command of Captain Sir James Clark Ross - Hooker, Joseph Dalton, 1817 -1911 (Printed and published by Reeve Brothers, 1845)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1981)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1982)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1983)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1984)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1985)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1986)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1987)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1988)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1989)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1991)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1994)

Cryptogamie. Algologie - Laboratoire de cryptogamie, Paris (ADAC, 1995)