Photometric standards and the unit of light /

Bibliographic Details

Main Author:	Preston, John Silvey, 1905-
Format:	Book
Language:	English
Published:	London : H.M.S.O., 1969.
Edition:	2nd ed.
Series:	Notes on applied science (National Physical Laboratory (Great Britain)) ; no. 24.
Subjects:	Light. Photometry. Electric lighting.