Hubbard, Richard L. Geology of the Pikes Peak region, Colorado / [electronic resource] / by Richard L. Hubbard, Danny J. Wyatt in cooperation with El Paso Community College, Colorado Springs, Colorado.. — [S.l. : : s.n.],, 1976. — iii, 41 p. : : ill. ; 22 cm.

Includes bibliographical references (p. 40-41).




Geology--Colorado--El Paso County.