2 matching record(s)

file S (Stack)Aldington, J. N.

"Electric lamps & kindred devices: historical introduction and the production of tungsten wire"

Engineering Bulletin no. 232, of Siemens Brothers & Co., Ltd., London, May 1947.

[1972-135]

1947

file S (Stack)Aldington, J. N.

"Electric lamps & kindred devices: fluorescent lamps"

Engineering Bulletin no. 234, of Siemens Brothers & Co., Ltd., London, September 1947.

[1972-134]

1947