{"id":"001030843","type":"book","title":"Rapport-svarta Jorden 1970-1971","publisher-place":"Stockholm","pages":"7-11","container-title":"Birka : Svarta Jordens Hamnområde. Arkeologisk undersökning 1970-1971","author":[{"family":"Ambrosiani","given":"Björn"}],"issued":{"raw":"1973"}}