Cotton, Peter B Practical gastrointestinal endoscopy / Peter B. Cotton, Christopher B. Williams - 4th ed - Oxford ; Cambridge, Mass. : Blackwell Science, 1996 - xi, 338 p., [8] p. of plates : ill. (some col.) ; 26 cm ISBN: 0865428514 LCCN: 95025737 Subjects--Topical Terms: GastroscopyGastrointestinal Diseases--diagnosisEndoscopy LC Class. No.: RC804.G3 / C68 1996 Dewey Class. No.: 616.3