Schereschewsky, Joseph Williams, 1873-, Tuck, Davis Henry, 1886-1953, United States. Public Health Service. Public health bulletin no. 71 · Washington, Govt. print. off. · leaf 205
Fig. 5.—Type of reflector H M-40, H M-60, S-11. Public Health Bulletin 71. PLATE V!ll. … Fig. 6.—Type of reflector H-9673, XE-60.
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