{"id":"000455720","type":"article","title":"Een schildknop uit Zwammerdam-Nigrum Pullum, gem. Alphen (Z.H.), 2. Inscripties","pages":"34-47","container-title":"Helinium, 11.1971","author":[{"family":"Haalebos","given":"J.K"}],"issued":{"raw":"1971"}}