A report on the percentage of near-sight found to exist in the class of 1880 at Harvard College with some account of similar investigations / An account of the phakometer of Snellen
Derby, Hasket.
1877.
A report on the percentage of near-sight found to exist in the class of 1880 at Harvard College with some account of similar investigations / An account of the phakometer of Snellen.
In: Boston Medical and Surgical Journal: 9.