Alkalic rocks and resources of thorium and associated elements o the Powderhorn district, Gunnison County, Colorado /

Autor Olson, Jerry Chipman, 1917-, Hedlund, David Carl, 1924-2018
Vydáno 1981

The conterminous United States mineral aseessment program : background information to axxompany folio of geologic and mineral resource maps of the Silver City 1°x2° quadrangle, New Mexico and Arizona /

Autor Richter, Donald H., 1926-, Houser, B. B., Watts, K. C., Klein, D. P., Sharp, William N. 1922-, Drewes, Harald, 1927-2015, Hedlund, David Carl, 1924-2018, Raines, Gary L., Hassemer, J. R.
Vydáno 1987