Home BS BS 12:1991 BS 12:1991$68.58 Original price was: $68.58.$34.29Current price is: $34.29. Specification for Portland Cementstandard by BSI Group, 01/01/1991 BS 12:1991 quantity Add to cart Category: BS Description Product Details Published: 01/01/1991 Number of Pages: 20 Related products BS X 35:1998BS $50.80 Original price was: $50.80.$25.40Current price is: $25.40. Add to cart BS Z 9:1998BS $434.34 Original price was: $434.34.$217.17Current price is: $217.17. Add to cart BS TS 3:1993BS $71.12 Original price was: $71.12.$35.56Current price is: $35.56. Add to cart BS W 14:1999BS $142.24 Original price was: $142.24.$71.12Current price is: $71.12. Add to cart