PD 6531:1997 gives queries concerning the interpretation of BS 5839 : Part 1 (as amended by Amendment Nos. 1 and 2) and BS 5839 : Part 4 (as amended by Amendment Nos. 1 and 2) together with the relevant answers.
PD 6531:1997 gives queries concerning the interpretation of BS 5839 : Part 1 (as amended by Amendment Nos. 1 and 2) and BS 5839 : Part 4 (as amended by Amendment Nos. 1 and 2) together with the relevant answers.