Azaleas and rhododendrons at the National Arboretum.

Bibliographic Details

Corporate Author:	United States. Agricultural Research Service
Format:	Government Document Book
Language:	English
Published:	[Washington] : Dept. of Agriculture, Agricultural Research Service, [1974]
Edition:	[Rev. Jan. 1974].
Series:	Program aid (United States. Department of Agriculture) ; no. 491.
Subjects:	Azaleas. Rhododendrons. National Arboretum (U.S.)