TY  - BOOK
AU  - Williams, C.B.
AU  - Cotton,P.B.
AU  - Tytgat,G.N.J.
TI  - Annaual of gastrointestinal endoscopy: illustrated in color 
SN  - 1870485181 (hbk.)
PY  - 1990///
CY  - London
PB  - Current Science
KW  - Endoscopy
KW  - Gastrointestinal system
KW  - Examination
KW  - Endoscopy, Gastrointestinal
KW  - methods
KW  - Gastrointestinal Diseases
KW  - diagnosis
KW  - therapy
N1  - Includes index; Includes bibliographical references
ER  -