The United States National Arboretum, Washington, D.C.
Series: PA -- 309; Program aid (United States. Department of Agriculture) -- no. 309.
Publisher: U.S. Dept. of Agriculture
Published: 1957
Place of publication: [Washington, D.C.]
Language: eng
Subjects: National Arboretum (U.S.); Arboretums
Other titles: National Arboretum