000 00291cam a22000977a 4500
008 180718b1951 xxu||||| |||| 00| 0 eng d
082 _aYA3x42 Un3
245 _aGovernment scientific organisation in the civilan field
260 _aLondon
_bHer Majesty's Stationery Office
_c1951
300 _a46p.
999 _c426867
_d426867