Kretschmer, Herman L. <br/><br/>
American certifying boards with special reference to the board of Urology /  
Herman L. Kretschmer. 
 - [Michigan :   s.n.,   1942?] 
 - 3 h. ;   26 cm. 
<br/><br/> Es tirada aparte de: The Journal of Urology, v.49, nº 1, Enero, 1943, p. 127-132.