1. U. S. Geol. Surv. Prof. Paper;Andreasen,1961
2. U. S. Geol. Surv. Proj. Paper;Andreasen,1960
3. Aeromagnetic and gravity studies of the Precambrian in northeastern New Mexico;Andreasen;Geophysics.,1962
4. U. S. Geol. Surv. Prof. Paper;Byerly,1959
5. U. S. Geol. Surv. Prof. Paper;Case,1961