من ويكيبيديا، الموسوعة الحرة
[edit] Summary
Group of male swimmers Backstroke swimming. This is an amateur competition, and the swimmer have a less-than-optimal position in the water (body too deep), and they waste too much energy with splashing water.
[edit] Licensing
Source: http://sill-www.army.mil/pao/photos/020801/Page.htm Information presented on the Fort Sill Web Site is considered public information and may be distributed or copied.
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