Gypsum resources of New Mexico,
by Robert H. Weber and Frank E. Kottlowski.
- Socorro, State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining & Technology, 1959.
- v, 68 p. illus., maps (2 fold. in pocket) tables, 23 cm.
- New Mexico. Bureau of Mines and Mineral Resources. Bulletin, no. 68 .
- Bulletin (New Mexico. Bureau of Mines and Mineral Resources) ; no. 68. .