00301cam a22001097a 4500 180718b1972 xxu||||| |||| 00| 0 eng d X203x42 Un3 / 72 The Building regulations 1972 By HMSO London HMSO 1972 187p. Building laws -- Great Britain 413061 413061 0 0 0 0 IIPA IIPA 2009-02-10 X203x42 Un3 / 72 DA4110 2018-07-21 2018-07-21 DA