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T. a'B. Travers
Br J Ophthalmol 1940; 24: 58-64. doi:10.1136/bjo.24.2.58
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A. J. Ballantyne
Br J Ophthalmol 1940; 24: 65-66. doi:10.1136/bjo.24.2.65
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P. C. Livingston and H. M. Walker
Br J Ophthalmol 1940; 24: 67-97. doi:10.1136/bjo.24.2.67
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Br J Ophthalmol 1940; 24: 99-100. doi:10.1136/bjo.24.2.99
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