297,077 297,303 PROTECTIVE Protective and therapeutic effects of gastrointestinal prostaglandins : enprostil a new modality : Proceedings of a symposium held November 13 and 14, 1985 in Toronto, Canada [...] / guest ed. Alan B.R. Thomson. - New York : Technical Publ., 1986. - [6], 88 s. : il. wykr. ; 28 cm (The American Journal of Medicine ; vol. 81, suppl. 2A) ISSN 0002-343