Welch, Claude E., <br/><br/>
Polypoid lesions of the gastrointestinal tract 
by Claude E. Welch and Stephen E. Hedberg. 
 - 2nd ed. 
 - Philadelphia  W. B. Saunders  1975. 
 - xiii, 220 pages :    illustration ;    24 cm. 
 - Major Problems in Clinical Surgery  V. 2 .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0721691714 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Intestinal polyps