TY  - BOOK
AU  - Yardley,John H.
TI  - The gastrointestinal tract by 21 authors / 
PY  - 1977///
CY  - Baltimore : 
PB  - Willliams and Wilkins , 
KW  - Gastrointestinal Diseases
KW  - congresses
KW  - Gastrointestinal Neoplasms
N1  -  "Based on presentations from the Academy's long course, Inflammatory and neoplastic diseases of the gastrointestinal tract given at the 65t h annual meeting of the United States, Canadian Division in March 1976"
ER  -