ANNUAL 313.271 6th Annual Congress of the International Society for Gynecologic Endoscopy Singapore 16-19 April 1997 : abstracts. - [Edinburgh] : by Blackwell Science Ltd., 1997. - III, 59 s. ; 28 cm. - (Gynaecological Endoscopy, ISSN 1354-5167 ; vol.6, suppl.1)