Plant-geography upon a physiological basis - Balfour, Isaac Bayley, 1853 -1922 (Clarendon Press, 1903)

Plant-geography upon a physiological basis. Translated by W.R. Fisher; rev. and edited by Percy Groom and I.B. Balfour - Schimper, A. F. W. (Andreas Franz Wilhelm), 1856 -1901 (Clarendon Press, 1903)

Plant guide : Field Museum's Guatemala tour - Clark, Phil ([Field Museum], 1967)

The plant, an illustration of the organic life of the animal - Coultas, Harland, 1817 -1877 (Perry and Erety, 1855)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1913)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1914)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1915)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1917)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1919)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1920)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1922)

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1924)

Plant indicators: the relation of plant communities to process and practice - Clements, Frederic E. (Frederic Edward), 1874 -1945 (Carnegie Institution of Washington, 1920)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1926)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1927)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1928)

Plant introductions - United States. Office of Foreign Plant Introduction. (Office of Foreign Seed and Plant Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1923)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1929)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1934)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1942)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1951)