Incoming Resources
- Extension division, University of Colorado, Boulder, Col., 1938
- The Center, Montana Bureau of Mines and Geology, Montana College of Mineral Science and Technology distributor, Boulder, Col., Butte, Mont., 1981
- Johnson Pub. Co., Boulder, Col., c1958
- Geological Society of America, Boulder, Col., 1981
- Roberts Rinehart, Boulder, Col., c1988