SUGARMAN DANIEL 552,543 CHOPRA SANJIV, SUGARMAN DANIEL Gastroenterology : problems in primary care / Sanjiv Chopra, Daniel Sugarman. - Oradell, New Jersey : Medical Economics Books, 11990]. -XI, [3], 193 s. : il., wykr. ; 23 cm (Problems in Primary Care/ Medical Economics Books, Oradell) ISBN 0-87489-460-3