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keith and blackman: high pressure gas lamps
Published in: Public Lighting Engineer No. 41, Vol. 11, April-June 1946
Published in: Public Lighting Engineer No. 42, Vol. 11, July-September 1946
Published in: Public Lighting Engineer No. 43, Vol. 11, October-December 1946
Published in: Public Lighting Engineer No. 44, Vol. 12, January-March 1947
Published in: Public Lighting Engineer No. 45, Vol. 12, April-June 1947
Published in: Public Lighting Engineer No. 46, Vol. 12, July-September 1947
Published in: Public Lighting Engineer No. 49, Vol. 13, January-March 1948
Published in: Public Lighting Engineer No. 50, Vol. 13, April-June 1948
Published in: Public Lighting Engineer No. 54, Vol. 14, January-March 1949
Published in: Public Lighting Engineer No. 55, Vol. 14, April-June 1949
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