TY  - GEN
AU  - Cotton, Peter, B.
AU  - Williams, Christopher, B.
TI  - Practical gastrointestinal endoscopy
SN  - 0632002743
U1  - 616.33 
PY  - 1980///
CY  - London
PB  - Black well Scientific Publication
KW  - DISEASES OF STOMACH
KW  - GASTROINTESTINAL
ER  -