Results: 1 - 2 of 2
Aug 31, 1983
Open File Report
… framework of Lower Cretaceous coal-bearing rocks in the Grande … framework of Lower Cretaceous coal-bearing rocks in the Grande … Framework of Lower Cretaceous Coal-Bearing Rocks in the Grande …
Dec 31, 1968
Earth Sciences Report
… sandstone, shale, and coal which immediately overlies the … of the high clay content but the coal beds are sufficiently …