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

Cannon, Helen L., 1911-1996, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1956. 1956

Description of indicator plants and methods of botanical prospecting for uranium deposits on the Col

Cannon, Helen L., 1911-1996, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1957. 1957

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

Cannon, Helen L., 1911-1996, author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1960. 1960

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

Cannon, Helen L., 1911-1996, author.
[Washington, D.C.] : [United States Department of the Interior, Geological Survey], [1955] 1955

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

Cannon, Helen L., 1911-1996, author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1964. 1964

Metal absorption by Equistetum (Horsetail) : a study of the metal content of horsetail plants as rel

Cannon, Helen L., 1911-1996, author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1968. 1968