000 00275pam a2200109a 44500
082 _a530.7
_bN21S V.12
100 _aNational Physical Laboratory
245 1 _aTHE CONTROL OF NOISE
260 _a
_bHer Majesty'S Stationery Office
_c1962
964 _gCIRC
997 _a52097 C
999 _c412286
_d412286