College zoology - Hegner, Robert William, 1880 -1942 (Macmillan, 1959)

Colour in nature; a study in biology - Newbigin, Marion I. (Marion Isabel), 1869 -1934 (J. Murray, 1898)

Colouration in animals and plants - Skertchly, Sydney B. J. (Sydney Barber Josiah), 1850 -1927 (Printed by Alabaster, Passmore and Sons, 1886)

Colouration in animals and plants - Skertchly, Sydney B. J. (Sydney Barber Josiah), 1850 -1927 (Alabaster, Passmore, 1886)

Commentarii de rebus in scientia naturali et medicina gestis - Johann Friedrich Gleditschens Buchhandlung, (Apud Ioh. Fridericum Gleditsch, 1752)

Common objects of the microscope - Wood, J. G. (John George), 1827 -1889 (G. Routledge, 1899)

Comparative anatomy - Siebold, C. Th. E. von (Carl Theodor Ernst), 1804 -1885 (Trubner, 1854)

A comparative limnological study of five lakes in Central Alberta - Kerekes, Joseph. (1965)

The Conchologist (Swan Sonnenschein & Co, 1894)

Conr. Gesneri Tigurini medicinæ et philosophiae professoris in Schola Tigurina, Historiæ animalium liber II : qui est de quadrupedibus ouiparis - Gessner, Conrad, 1516 -1565 (Ex officina typographica Ioannis Wecheli : Impensis Roberti Cambieri, 1586)

Conradi Gesneri medici Tigurini Historiae animalium liber primus de quadrupedibus viuiparis : opus philosophis, medicis, grammaticis, philologis, poëtis, & omnibus rerum linguarumq́ue variarum studiosis, vtilissimum simul iucundissimumq́ue futurum - Gessner, Conrad, 1516 -1565 (In Bibliopolio Cambieriano, 1551)

Conspectus florae Graecae - Halácsy, Eugen v., 1842 -1913 (Sumptibus Guilelmi Engelmann, 1901)

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

A contribution to the physiology of the fresh-water sponges (Spongillidae) - Trigt, Herman van (Brill, 1919)

Contributions from the Laboratory of Plant Genetics - Bussey Institution. ([s.n.], 1909)

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

Contributions to the fauna of the New York Croton water : microscopial observations during the years 1870-'71 - Gissler, Carl F. (Charles Vogt, 1872)

Contributions to the natural history of the United States of America - Agassiz, Louis, 1807 -1873 (Little, Brown and Company, 1860)

Contributions to the natural history of the United States of America - Agassiz, Louis, 1807 -1873 (Little, Brown and Company, 1862)

A Cornish Fauna : being a compendium of the Natural History of the County, intended to form a companion to the Collection in the Museum of the Royal Institution of Cornwall. Part 3, The Zoophytes and Calcareous Corallines - Couch, Jonathan, 1789 -1870 (1844)

A Cornish fauna : being a compendium of the natural history of the county : intended to form a companion to the collection in the Museum of the Royal Institution of Cornwall - Couch, Jonathan, 1789 -1870 (Printed for the Royal Institution of Cornwall, by L.E. Gillet, 1838)

A Cornish fauna; being a compendium of the natural history of the county, intented to form a companion to the collection in the Museum of the Royal Institution of Cornwall. Part 3, Containing the zoophytes and calcareous corallines - Couch, Jonathan, 1789 -1870 (printed for the Royal Institution of Cornwall ; by L.E. Gillet, 1844)

A Cornish fauna : being a compendium of the natural history of the county intended to form a companion to the collection in the Royal Institution of Cornwall / by J. Couch [and Richard Q. Couch]. pt. 3 - Couch, Jonathan, 1789 -1870 (Printed for the Royal Institution of Cornwall, by L.E. Gillet, 1844)

A course in nature study for use in the public schools - Miller, Louise. (W.S. Ray, state printer, 1900)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1892)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1879)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1889)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan, 1898)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan, 1889)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1888)