The development of botanical methods of prospecting for uranium on the Colorado Plateau /

by Cannon, Helen L., 1911-1996
Published 1960

Geo botanical reconnaissance near Grants, New Mexico /

by Cannon, Helen L., 1911-1996
Published 1953

Description of indicator plants and methods of botanical prospecting for uranium deposits on the Colorado Plateau /

by Cannon, Helen L., 1911-1996
Published 1957

Geochemical relations of zinc-bearing peat to the Lockport dolomite, Orleans County, New York /

by Cannon, Helen L., 1911-1996
Published 1955

Geochemistry of rocks and related soils and vegetation in the Yellow Cat area, Grand County, Utah /

by Cannon, Helen L., 1911-1996
Published 1964

Botanical prospecting for uranium on La Ventana Mesa, Sandoval County, New Mexico /

by Cannon, Helen L., 1911-1996, Starrett, W. H.
Published 1956

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 Cannon, Helen L., 1911-1996, Bastron, Harry, Shacklette, Hansford T.
Published 1968