Elizabeth Gibney, Nature, 31 marzo 2020
Coronavirus lockdowns have changed the way Earth moves
		
			https://www.nature.com/articles/d41586-020-00965-x?fbclid=IwAR2bKVF6iBp00fremlHtswwFgzsbEuFbBB2pwIUp6_dSVnKUQAVXnRu7eBk		
		
		Elizabeth Gibney, Nature, 31 marzo 2020
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