BACKAS NILS-ERIK [red.] 541,946 SCANDINAVIAN XXII Scandinavian Congress of Obstetrics and Gynecology : Helsinki, Finland, June 7—10,1982 / ed.: Carl Gustaf Nilsson and Nills-Erik Backas. — Helsinki : The Scandinavian Association of Obstetricians and Gynecologists, 1980. — 112 s. ; 24 cm Acta Obstetricia et Gynecologica Scandinayica ; suppl. 116 ISSN 0300-8835 ISBN 91-7626-039-9