{"id":"000999834","type":"book","title":"Hints that cometary debris played some role in several tree-ring dated environmental downturns in the Bronze Age","publisher":"Archaeopress","publisher-place":"Oxford","pages":"109-116","container-title":"Natural catastrophes during the Bronze Age civilisations : Archaeological, geological, astronomical and cultural perspectives","author":[{"family":"Baillie","given":"M. G. L."}],"issued":{"raw":"1998"}}