TY  - BOOK
AU  - Powell,Lawrie W.
AU  - Piper,Douglas W.
TI  - Fundamentals of gastroenterology: with self-assessment workbook 
SN  - 0074527835
PY  - 1991///
CY  - New York
PB  - McGraw-Hill
KW  - Gastroenterology
ER  -