Metal absorption by Equistetum (Horsetail) : a study of the metal content of horsetail plants as related to the amounts of metals in the soil on which they grew / by Helen L. Cannon, Hansford T. Shacklette, and Harry Bastron.
Publication Info.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1968.
Washington : United States Government Printing Office