BS December 7, 2019 BS 4727-1:GROUP 11:1991 Click here to purchase Product Details Published: 03/29/1991 ISBN(s): 0580194523 Number of Pages: 40 File Size: 1 file , 3.2 MB Product Code(s): 00236136, 00236136, 00236136 Note: This product is unavailable in United Kingdom You May Also Like BS BS MA 99-1:1985 BS BS 1449:1948