{"id":"000983139","type":"book","title":"Economische specialisatie en handelsplaatsen in de vroege middeleeuwen","publisher":"De Haan","publisher-place":"Houten","pages":"351-360","container-title":"Pre- en protohistorie van de Lage Landen","author":[{"family":"Bitter","given":"P."}],"issued":{"raw":"1991"}}