00503nam a22001457a 4500 230518b |||||||| |||| 00| 0 eng d National Science Library National Science Library R 019:5/6(410) J6 Department of scientific and industrial research: Revised to October, 1956 / H. M. Stationery Office London: H. M. Stationery Office, 1956 36p. Sectional list no. 3 Great Britain udc REF 31895 31895 0 0 udc 0 R_01956410_J6 0 48288 NSL NSL GF/Rk-7/C-9/R-5 2023-05-18 0 R 019:5/6(410) J6 4357 2023-05-18 00:00:00 2023-05-18 REF