Hugnes, W. F. (1981). The year book ophthalmology. Year Book Medical.
Chicago-čujuhus (17. p.)Hugnes, William F. The Year Book Ophthalmology. Year Book Medical, 1981.
MLA-čujuhus (9. p.)Hugnes, William F. The Year Book Ophthalmology. Year Book Medical, 1981.
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