6901 Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals, e.g. kieselguhr, tripolite or diatomite, or of similar siliceous earths

6901 (01/1988-..) Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals, e.g. kieselguhr, tripolite or diatomite, or of similar siliceous earths 69010000 (01/2004-..) Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals, e.g. kieselguhr, tripolite or diatomite, or of similar siliceous earths 69010010 (01/1988-12/2003) Bricks, of siliceous fossil meals, e.g. kieselguhr, tripolite or diatomite, or of similar siliceous earths, weighing 650 kg/m² 69010090 (01/1988-12/2003) Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals, e.g. kieselguhr, tripolite or diatomite, or of similar siliceous earths (excl. bricks weighing 650 kg/m²)