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carl-nathan
carl-nathan
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carl-nathan
Joined
June 2021
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Last Active
June 2021
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do very loud ultrasonic frequencies damage our ears?
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Most recent by
retsum
June 2021
Science & Mathematics
do very loud ultrasonic frequencies damage our ears?
1
view
1
comment
0
points
Most recent by
retsum
June 2021
Science & Mathematics
