bn:02433981n
Noun Concept
EL
ακατέργαστη πέτρα  κουρέλι-πέτρα
EN
Rag-stone is a name given by some architectural writers to work done with stones that are quarried in thin pieces, such as Horsham Stone, sandstone, Yorkshire stone, and the slate stones, but this is more properly flag or slab work. Wikipedia
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