Richmond Nursery catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Richmond Nursery, 1928)

Die Riesen der Pflanzenwelt - Mielck, Eduard. (C.F. Winter, 1863)

Rod and gun - Canadian Forestry Association. (Rod and Gun Pub. Co. [etc.], 1903)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1980)

Die rohstoffe des pflanzenreiches; versuch einer technischen rohstofflehre des pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1903)

Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1918)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1861)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1871)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1866)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1886)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1870)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1862)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (J. Nisbet, 1860)

The romance of natural history - Gosse, Philip Henry, 1810 -1888 (Gould and Lincoln, 1861)

The romance of our trees - Wilson, Ernest Henry, 1876 -1930 (Doubleday, Page, 1920)

Roses, ornamental trees and shrubs, fruit trees, berry vines, perennial plants, garden requisites, 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Sunset Nursery Co., Incorporated, 1942)

Roses, ornamental trees and shrubs, fruit trees, berry vines, perennial plants, garden requisites, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Sunset Nursery Co., Incorporated, 1941)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1856)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1870)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1900)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1910)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1928)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1929)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1942)

Saier's garden magazine : a manual of rare flowers, their selection and culture vol. 3, no. 3 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1952)

Saier's garden magazine : a manual of rare flowers, their selection and culture vol. 2, no. 17 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1951)

Save the redwoods - Muir, John, 1838 -1914 (1920)

Saving California's redwoods - Grant, J. D. (Joseph Donohoe), 1858 -1942 (Save the Redwoods League, 1922)

Saving the redwoods; an account of the movement during 1919 to preserve the redwoods of California - New York Zoological Society. (Zoological Society, 1919)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1862)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1860)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1899)

Science - American Association for the Advancement of Science. ([s.n.], 1885)

Science - American Association for the Advancement of Science. ([s.n.], 1894)

Science - American Association for the Advancement of Science. ([s.n.], 1880)

Science - American Association for the Advancement of Science. ([s.n.], 1900)

Science - American Association for the Advancement of Science. ([s.n.], 1907)

Science - American Association for the Advancement of Science. ([s.n.], 1911)

Science of plant life, a high school botany treating of the plant and its relation to the environment - Transeau, Edgar Nelson, 1875 -1960 (World Book Co, 1921)

Science of plant life, a high school botany treating of the plant and its relation to the environment - Transeau, Edgar Nelson, 1875 -1960 (World Book Co, 1919)

Science progress (John Murray, 1920)

Les sciences biologiques appliquées à l'agriculture et la lutte contre les ennemis des plantes aux États-Unis - Marchal, Paul, 1862 -1942 (Librairie Lhomme, 1916)

The Scientific monthly - American Association for the Advancement of Science. (American Association for the Advancement of Science [etc.])

Scientific papers of Asa Gray - Gray, Asa, 1810 -1888 (Houghton, Mifflin, 1889)

Scientific papers of Asa Gray - Gray, Asa, 1810 -1888 (Houghton, 1889)

The Scientific proceedings of the Royal Dublin Society - Royal Dublin Society. (The Society, 1920)

The Scientific proceedings of the Royal Dublin Society - Royal Dublin Society. (The Society, 1922)