Inventions e-Book's MCQs - Complete
X-ray machine MCQs App Download (Free) & e-Book - 394
Apps:
MCQ:
An X ray machine was invented by a professor named
- Sir Wilhelm Conrad Roentgen
- Dr Dennis Colonello
- Dr Larry wang
- Sir Norman Rolston
a
Inventions App & e-Book Tests PDF Download
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General Knowledge MCQs eBook Download
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