{"id":"001067454","type":"book","title":"Cerealia pollen evidence from pollen diagrams and palaeoethnobotany in Bulgaria","publisher":"FABER","publisher-place":"Sofia","pages":"311-317","container-title":"Prae. In honorem Henrieta Todorova","author":[{"family":"Tonkov","given":"Spassimir B."}],"issued":{"raw":"2007"}}