TY  - BOOK
AU  - Poynard , T.   .
TI  - Duodenal Ulcer / 
U1  - 616.3433061 
PY  - 1989///
CY  -  : 
PB  - John Libbnery & Com.  , 
KW  - Gastroenterology
KW  - Medical Science
ER  -