548,687 KROON PER-OLF Bicycle accidents in Gothenburg 1983-84 : [akademisk avhandling] / Per-Olof Kroon ; Gothenburg University, from the Department of 0rthopaedics. - Göteborg : [Universitas Regia Goghoburgensis], 1990. -90 s. : wykr. ; 24 cm ISBN 91-790-933-6