1. A new trachoma concept;Ching;Arch. Ophthal.,1954
2. H.M.S.O. London: Blindness in British African and Middle East Territories. 1948, pp. 1–6.
3. Trachoma;MacCallan,1936
4. Mann, I.: Ophthalmic survey of the Eastern Goldfields area of W. Australia. Perth, 1954.
5. Mann, I.: Ophthalmic survey of the S.W. portion of W. Australia. Perth, 1956.