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- Quarries and quarrying -- Wales -- Bethesda -- Records and correspondence, 1 results
- Quarries and quarrying -- Wales -- Bethesda -- Accounting, 1 results
- Slate industry -- Wales -- Bethesda -- Records and correspondence, 1 results
- Slate industry -- Wales -- Bethesda -- Accounting, 1 results
- Quarries and quarrying -- Wales -- Bethesda -- Employees -- Salaries, etc., 1 results
- Slate industry -- Wales -- Bethesda -- Employees -- Salaries, etc., 1 results
- Domestics -- Wales -- Bethesda -- Salaries, etc., 1 results
- Unskilled labor -- Wales -- Bethesda -- Salaries, etc., 1 results
- Schools -- Wales -- Anglesey., 1 results
- Cae Braich y Cafn (Quarry : Wales) -- Records and correspondence, 1 results
