… travertine, ecaussine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or …
Explanatory notes
… travertine, ecaussine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or … 2515.20 - Ecaussine and other calcareous monumental or building stone; alabaster Marble is a hard calcareous stone, … heading covers other similar hard calcareous monumental or building stones, provided their apparent specific gravity is …