{"id":"001221961","type":"book","title":"Vegetation history of Abies alba Mill. (silver fir) in Switzerland, pollen analytical and genetic surveys related to aspects of vegetation history of Picca abies (L.) H. Karsten (Norway spruce)","pages":"151-159","container-title":"Vegetation History and Archaeobotany, 10,3 (2001","author":[{"family":"Burga","given":"Conradin A."}],"issued":{"raw":"2001"}}