00328nam a22000977a 4500 230927b |||||||| |||| 00| 0 eng d National Science Library National Science Library GEC-AEI journal of science and technology London: The General Electric Company Limited of England CR 62108 62108 0 0 Vol. 35, 1968 0 0 159311 NSL NSL FF/Rk-24/C-13/R-3 2023-09-27 0 50312 2023-09-27 00:00:00 2023-09-27 CR