Schereschewsky, Joseph Williams, 1873-, Tuck, Davis Henry, 1886-1953, United States. Public Health Service. Public health bulletin no. 71 · Washington, Govt. print. off. · leaf 217
Fig. 20.—Distribution curve of reflector F-9 and 100-watt tungsten lamp. 198 … FiQ. 21.—Distribution curve ot reflector C-8 and 50-watt gem lamp. 199
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