The Genus Salix [Willows] in the Black Hills of South Dakota.
Froiland, Sven G.
The Genus Salix [Willows] in the Black Hills of South Dakota. - 1962. - s. IV, 75 : il. ; 24. - No. 1269 . - Technical Bulletin - U. S. Department of Agriculture, Forest Service No. 1269 .
bibliogr. = Tech. Bull. U. S. Dep. Agric. For. Serv.
The Genus Salix [Willows] in the Black Hills of South Dakota. - 1962. - s. IV, 75 : il. ; 24. - No. 1269 . - Technical Bulletin - U. S. Department of Agriculture, Forest Service No. 1269 .
bibliogr. = Tech. Bull. U. S. Dep. Agric. For. Serv.