Welch, Claude E. <br/><br/>
Polypoid lesions of the gastrointestinal tract. 

 - Philadelphia :  W.B. Saunders,  [1968] 
 - Major problems in clinical surgery ;  v. 2 .
<br/><br/> First published in 1964. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alimentary canal -- Tumors.--Alimentary canal -- Tumors.