{"id":"001196821","type":"book","title":"The importance of primeval circular ditches. Considerations on farming, religion and organisation of ancient agricultural civilisations","pages":"40-42","container-title":"Bulletin du Centre Interdisciplinaire de Recherches Aériennes, 22,2 (1999","author":[{"family":"Kovárník","given":"Jaromír"}],"issued":{"raw":"1999"}}