Ethiopia Grade 12 Biology - Unit _1 _ Part 4 Micro -Organisms (የ12ኛ ክፍል ባዮሎጂ - ምዕራፍ 1 _ ክፍል _4 )

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Ethiopia Grade 12 Biology - Unit 1 - Part -4 Micro _ Organisms How are disease - causing micro - organisms transmitted? (የ12ኛ ክፍል ባዮሎጂ በጣም ቀላልና ግልፅ በሆነ መንገድ - ምዕራፍ 1 - ክፍል 4 )
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