Timeline for What is the loud noise of a helicopter when the rotors are not yet moving?
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
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| Aug 25, 2019 at 17:15 | history | edited | Harper - Reinstate Monica | CC BY-SA 4.0 |
deleted 13 characters in body
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| Aug 25, 2019 at 16:42 | history | answered | Harper - Reinstate Monica | CC BY-SA 4.0 |