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2. BAILLIART, P. (1928) Bull. Soc. franf. Ophtal., 41, 323
3. BOLES CARENINI, B., and CAMBIAGGI, A. (1957) Ibid., 34, 62
4. Le trachome;CUENOD, A.; NATAF, R.;Bull. Soc. frank. Ophtal,1928
5. DUKE-ELDER, S. (1957) Trans. ophthal. Soc. U.K., 77, 205