ZETTERSTRÖM ROLF 301,241 NORDBERG LILLEMOR, RYDELIUS PER-ANDERS, ZETTERSTROM ROLF Psychomotor and mental development from birth to age of four years ; sex differences and their relation to home environment : chldren in a new Stockholm suburb : results from a longitudinal prospective study starting at the beginning of pregnancy /Lille-mor Nordberg, Per-Anders Rydelius and Rolf Zetters-trom ; from the Department of Child and Adolescent Psychiatry, Karolińska Institute, St. Goran's Children's Hospital, Stockholm. - Stockholm : Almqvist and Wiksell International, 1991. - 25 s. x wykr. i 25 ca (Acta Paediatrica Scandinavica, ISSN 0300-8843 ; suppl. 378)