Plant exploration report for safflower and miscellaneous oilseeds, Near East and Mediterranean countries : March-October 1958 - United States. Agricultural Research Service. Crops Research Division. (USDA, ARS, Crops Research Division, 1959)

Plant explorations : ornamentals in Australia - Spalding, George H. (Agricultural Research Service, U. S. Dept. of Agriculture in cooperation with Longwood Gardens of the Longwood Foundation, 1962)

Plant Form - Bell, Adrian D. (OXFORD UNIVERSITY PRESS, 1991)

Plant growth regulation - Boyce Thompson Institute for Plant Research. (Iowa State University Press, 1961)

Plant growth substances - University of Wisconsin. (University of Wisconsin Press, 1951)

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

Plant immigrants - United States. Office of Foreign Seed; Plant Introduction. (Office of Foreign Seed and Plant Introduction, 1918)

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, 1921)

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 Indumentum: a handbook of terminology - Hewson, Helen (Australian Govt. Pub. Service, 2019)

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)