Subject ASC0003tjj

The geological magazine, or, Monthly journal of geology.
n.s. decade 4, v. 1 (1894), Page 484 (1894)
Smithsonian Libraries
BHL Page 30749597

Keywords

groundlayers section vertical band bathing-cots river hodder stonyhurst waterschoot van der gracht van der gracht wm limestone roof lenticular mass nodule carbonaceous shale trilobite seam block stones grit layers

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