Low back pain in forty to fortyseven year old men: a retrospecive cross-sectional study.
Card's contents:538,915 SVENSSON HANS-OLOF Low back pain in forty to fortyseven year old men: a retrospecive cross-sectional study. Göteborg 1981 Uno Lundgren Tryckeri Ab Partille 8° s. nlb. 4, 23, prace 4 il. + wkł. s. nlb. 2 Akad. avhandling Univ. of Göteborg Dep. of Orthopedic Surgery