Geology and coal resources of the Starkville-Weston area, Las Animas County, Colorado /

Autor Wood, Gordon H. 1919-1986, Johnson, Ross B., 1919-, Dixon, George H.
Vydáno 1957

Geology of rocks of Pennsylvanian age in the southern half of the Tremont quadrangle Schuylkill County, Pennsylvania /

Autor Wood, Gordon H. 1919-1986, Trexler, J. Peter, Yelenosky, Andy, Soren, Julian
Vydáno 1962