000 00261cam a22000977a 4500
008 180718b1967 xxu||||| |||| 00| 0 eng d
082 _aK63x42 Un3s
245 _aThe ''D'' notice system
260 _aLondon
_bHer Majesty's Stationery Office
_c1967
300 _a14+p.
999 _c500128
_d500128