Subject ASC000094d
Midland naturalist.
v.4 1881, Page 27 (1881)
Mertz Library, The New York Botanical Garden
BHL Page 14315069
Keywords
silica alumina iron lime carbonaceous matter carbonic acid water Bristol coalfield Brandon millstone grit brandon analysis carbonaceous analysys acid soluble insoluble Millstone grit coalfield Bristol Brandon Hill chemical Geology coal geology bristol coalfield brandon hill assay Hill rock analysis Analyses of grit Bristol Coal field