site.btaBulgarian Academy of Sciences Celebrates Earth Day
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![Bulgarian Academy of Sciences Celebrates Earth Day](/upload/1340249/ezgif-1-9b4cb7a1bb.jpg?l=1000&original=)
The Bulgarian Academy of Sciences (BAS) celebrates Earth Day on the initiative of its Geological Institute (GI-BAS) in the Institutе building in Sofia Friday from 9:30 to 16:00.
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