{"id":"000028068","type":"book","title":"The development of the vegetation of southern Illinois since late illinoian time (preliminary report).- Paris","container-title":"Revue de géographie physique et de géologie dynamique; 12. 1970, fasc. 2, S. 143-148: 1 Ill","author":[{"family":"Grüger","given":"Eberhard"}],"issued":{"raw":"1970"}}