Congenital valves of the posterior urethra /
Kretschmer, Herman L.
Congenital valves of the posterior urethra / by Herman L. Kretschmer and L. E. Pierson. - Chicago : American Medical Association, 1929. - 14 p. ; 26 cm.
Congenital valves of the posterior urethra / by Herman L. Kretschmer and L. E. Pierson. - Chicago : American Medical Association, 1929. - 14 p. ; 26 cm.
