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Inventions Learning Guide: Certification Test 639

Sign Language MCQ App Download & PDF e-Book - 639

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MCQ: 639

Which one of the following invents the American sign language?

  1. Sir T.J Blachut
  2. Sir Thomas Hopkins
  3. Sir Walter Brattain
  4. Sir T.J Blachut
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8th Class Science Test Questions

8th Class Science Quiz with Answers