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47-а национална конференция на учителите по химия
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Author(s): Author Not Specified
Subject(s): Social Sciences, Education, School education, Higher Education , Conference Report
Published by: Национално издателство за образование и наука „Аз-буки“
  • Issue Year: 26/2017
  • Issue No: 5
  • Page Range: 647-648
  • Page Count: 2
  • Language: Bulgarian