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References
Department of Scientific and Industrial Research: National Physical Laboratory. Notes on Applied Science, No. 23: Radiometric Standards and Measurements. E. J. Gillham . Pp. iv + 23. (London: H.M.S.O., 1961.) 1s. 9d. net.
Department of Scientific and Industrial Research: National Physical Laboratory. Notes on Applied Science No. 24: Photometric Standards and the Unit of Light. J. S. Preston . Pp. iv + 32 + 4 plates. (London: H.M.S.O., 1961.) 3s. net.
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WEINTROUB, S. Radiometric and Photometric Standards. Nature 192, 1249–1250 (1961). https://doi.org/10.1038/1921249a0
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DOI: https://doi.org/10.1038/1921249a0