Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1956)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1958)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1966)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1967)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1968)

Plant inventory - United States. Agricultural Research Service. (Northeastern Region, Agricultural Research Center-West, 1969)

Plant life - American Plant Life Society. (American Plant Life Society, 1959)

Plant life through the ages : a geological and botanical retrospect - Seward, A. C. (Albert Charles), 1863 -1941 (Hafner, 1933)

Plant list : Dutch Guiana - Samuels, Jacob Alexander, (1918)

Plant list : Ecuador - Record, Samuel J. (Samuel James), 1881 -1945 (1933)

Plant lists : Australia, Papua New Guinea, and the United States - Brass, L. J. (Leonard John), 1900 -1971 (1919)

Plant lists : Central and South America, Mexico - Mexía, Ynés, 1870 -1938 (1935)

Plant lists : Chile, Colombia, Ecuador, and Peru - Rusby, Henry Hurd, 1855 -1940 (1916)

Plant lists : Colombia and Peru - Klug, Guillermo, 1946 (1931)

Plant lists, Mexico - Hinton, George B., 1882 -1947 (1931)

Plant lists : Panama and Liberia - Slater, George Mackay, (1927)

Plant lists : Papua New Guinea - Wright, Debra D. (1991)

Plant lists : Venezuela - Pittier, Henri, 1857 -1950 (1917)