Bulletin 860-A. Geology and fuel resources of the southern part of the San Juan Basin, New Mexico. Part 1, The coal field from Gallup Eastward toward Mount Taylor : with a measured section of Pre-Dakota (?) rocs near Navajo Church
Bulletin 860-A. Geology and fuel resources of the southern part of the San Juan Basin, New Mexico. Part 1, The coal field from Gallup Eastward toward Mount Taylor : with a measured section of Pre-Dakota (?) rocs near Navajo Church