File:Changes in helmet mass.png
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Summary[edit | edit source]
Changes in helmet mass from the early 1970s until 2010 (Jadischke 2016)
Licensing[edit | edit source]
This work has been released into the public domain by its author. This applies worldwide. In some countries this may not be legally possible; if so: the author grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:05, 21 November 2016 | 904 × 534 (49 KB) | Charmene Chaudhry (talk | contribs) | Changes in helmet mass from the early 1970s until 2010 (Jadischke 2016) |
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