TY - GEN AU - Ross,Reuben AU - Nolan,Thomas AU - Harris,Anita TI - The Upper Ordovician and Silurian hanson creek formation of Central Nevada T2 - U. S. Geological survey professional paper, 1126-C KW - Stratigraphie KW - Ordovicien KW - Silurien KW - Faune trilobite KW - Etats Unis KW - Nevada N1 - bibliogr. p. C15, C21-C22 ER -