TASKS FROM ONLINE COMPETITION “VIVA MATHEMATICS WITH А COMPUTER”: A RESOURCE FOR WORK IN STEM CENTERS von Georgi Gachev, Georgi Gachev, Kenderov, Petar, Chehlarova, Toni

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Online Contest “Mathematics and Art” for the Development of Key Competencies von Chehlarova, Neda, Gachev, Georgi

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First records of a new Europe's southernmost glacier found in Southern Albania von Gachev, Emil, Meshini, Erald, Matev, Simeon, Iliev, Martin, Gachev, Georgi, Gacheva, Maria

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Online Competition “VIVA Mathematics with Computer” von Kenderov, Petar, Chehlarova, Toni, Gachev, Georgi

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On the Genetic Ties between European Nations von Tabov, Jordan, Sabeva-Koleva, Nevena, Gachev, Georgi

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Таблети със среда за визуално програмиране – образователни перспективи von Gachev, Georgi

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Онлайн състезание „VIVA математика с компютър von Chehlarova, Toni, Gachev, Georgi, Kenderov, Petar

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Генетична проверка на някои исторически сведения за балканските народи von Tabov, Jordan, Gachev, Georgi

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STERILIZER, SYSTEM AND METHOD FOR STERILIZING AIR INTENDED FOR BREATHING von Gachev, Georgi

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AIR STERILIZATION DEVICE von Gachev, Georgi Stamov

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Research of Field Evidence for Late Quaternary Climate Changes in the Highest Mountains of Bulgaria von Gachev, Emil

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Researches of Field Evidence for Late Quaternary Climate Changes in the Highest Mountains of Bulgaria von Gachev, Emil

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