by U.S. Dept. of the Interior, Office of Surface Mining, Technical Services and Research in [Washington, D.C.?] .
Written in English
|Statement||prepared by Ral Sandberg ... [et al.].|
|Contributions||Sandberg, Ral., United States. Office of Surface Mining Reclamation and Enforcement. Division of Technical Services & Research.|
|The Physical Object|
|Pagination||1 v. (various pagings) :|