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Inventions MCQs e-Book PDF | Piano App Download

Inventions Competitive Exam: Certification Test 222

Piano MCQs App Download & PDF e-Book - 222

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MCQ: 222

28 Keys piano is an invention of

  1. Dr Dennis Colonello
  2. Sir Bartolomeo Cristofori
  3. Sir Otto Blathy
  4. Sir James Hillier
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Piano Competitive Exam: Inventions App & eBook MCQs

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8th Class Science Test Questions

8th Class Science Quiz with Answers