USDA National Agricultural Library This 23-minute video is a historical silent motion picture produced by the USDA in the 1920s. …
Naturalized Plant Immigrants: A Bureau of Plant Industry Picture

USDA National Agricultural Library This 23-minute video is a historical silent motion picture produced by the USDA in the 1920s. …
Emma Balunek, Jenny Smith, Gayle M. Volk, John E. Preece The purpose of this chapter is to provide information …
Gayle M. Volk and John E. Preece The eBook “Field Tour of the USDA National Clonal Germplasm Repository for Tree …