The thymus  a symposium held at The Wistar Institute of Anatomy and Biology, April 29, 1964 
edited by Vittorio Defendi and Donald Metcalf 
 - Philadelphia  Wistar Institute Press  1964 
 - 145 p. :  ill. ;  26 cm. 
 - Wistar Institute symposium monograph  no.2 .
<br/><br/>includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Thymus gland--Congresses