The Geology of the Burnley Coal-field and of the Country Around Clitheroe, Blackburn, Preston, Chorley, Haslingden, and Todmorden. (Quarter Sheets 88 N.W., 89 N. E., 89 N.W., and 92 S.W., of the 1-inch Geological Maps)

The Geology of the Burnley Coal-field and of the Country Around Clitheroe, Blackburn, Preston, Chorley, Haslingden, and Todmorden. (Quarter Sheets 88 N.W., 89 N. E., 89 N.W., and 92 S.W., of the 1-inch Geological Maps)