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Logo of brjopthalBritish Journal of OphthalmologyCurrent TOCInstructions for authors
 
Br J Ophthalmol. 1920 April; 4(4): 167–187.
PMCID: PMC512432
b—ILLUMINATION IN COAL MINES—SOME OBSERVATIONS
H. S. Elworthy, F.R.C.S.
EBBW Vale, Mon.
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