Cover image for Stratigraphic significance and petrology of phosphate nodules at base of Niobrara Formation, east flank of Black Hills, South Dakota
Title:
Stratigraphic significance and petrology of phosphate nodules at base of Niobrara Formation, east flank of Black Hills, South Dakota
Author:
Tourtelot, Harry Allison, 1918-
Publication Information:
Washington : U.S. Govt. Print. Off., 1968.
Physical Description:
iii, 22 pages, 5 unnumbered pages : illustrations ; 29 cm.
Language:
English
Geographic Term:
Format :
Book