1.
Coal Geology and Assessment of Coal Resources and Reserves in the Powder River Basin, Wyomin...
by Luppens, James A.
ISBN: 9781411338753
OUT OF STOCK
See Availability on Amazon2.
Status Report : Usgs Coal Assessment of the Powder River, Wyoming
by Luppens, James A., Rohrbach...
ISBN: 9781287179832
List Price: $15.75
OUT OF STOCK
See Availability on Amazon3.
A Critical Review of Published Coal Quality Data From the Southwestern Part of the Powder Ri...
by James A. Luppens
ISBN: 9781288704071
List Price: $15.75