TY  - BOOK
AU  - Edward,Berk J.
AU  - Bocdus,Henry L.
TI  - Bockus gastroenterology volume 4
SN  - 0721617816
CY  - phialdelephia : 
PB  - W. B. Saunders Comapy
KW  - Gastrointestial diseases
ER  -