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JAMA. 1972;221(10):1171-1172. doi:10.1001/jama.1972.03200230055033.
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Bowen SF:  Retinal entoptic phenomena , Arch Ophthal 69:551-555, 1963.
Link to Article[[XSLOpenURL/10.1001/archopht.1963.00960040557003]]
Duke-Elder S, Scott GI:  Neuro-ophthalmology , in System of Ophthalmology . St. Louis, CV Mosby Co, 1971, vol 12, pp 562-569.
Industrial Ventilation—A Manual of Recommended Practice , ed 11, Lansing, Mich, American Conference of Governmental Industrial Hygienists, 1970.
Gravriysky V:  Vision and sporting results . J Sport Med 10:260, 1970.
Hull TG (ed): Diseases Transmitted From Animals to Man , ed 5. Springfield, Ill, Charles C Thomas Publisher, 1963.
Hobson W (ed): The Theory and Practice of Public Health , ed 3, London, Oxford University Press, 1969.


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