Bibliographic Detail
Andrews, G.W., 1971
Reference:
Andrews, G.W. (1971). Early Miocene non marine diatoms from the Pine Ridge Area. Sioux County, Nebraska. United States Geological Survey professional paper 683(E): 1-17, 2 pl.
Publication Date:
1971
Notes:
U.S. Geol Surv. Prof. Pap. 683 (E): E11, pl. 1; figs 25-27 (INA).