Sofia, May 19 (BTA) – Four Bulgarian high school students won awards for three innovation projects at the world’s largest pre-college science competition, the 2015
ABNA-SE
Association of the Balkan News Agencies Association
Association of the Balkan News Agencies Association
Sofia, May 19 (BTA) – Four Bulgarian high school students won awards for three innovation projects at the world’s largest pre-college science competition, the 2015