1. On the frequency of varicocele and the limitations of operative treatment for this affection Author(s): Senn, Nicholas, 1844-1908, author Publication: Philadelphia : [publisher not identified], 1898 Subject(s): Varicocele -- epidemiologyMilitary Personnel -- statistics & numerical dataIllinois
2. On the frequency of cryptorchism and its results Author(s): Senn, Nicholas, 1844-1908, author Publication: [New Orleans?] : [publisher not identified], [1899?] Subject(s): Cryptorchidism -- epidemiologyMilitary PersonnelIllinois
