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Yanko Design - OasiSaw is an innovative water pump system that utilizes human play to extract ground water. The iconic seesaw design harnesses energy created during play to not only pump, but
Dartmouth Humanitarian Engineering (DHE) - Kevin Francfort '15 tries out the water-pump seesaw at ProSynergy's Huancaho Yachaywasi. | Facebook
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Pumping Seesaw Children Play Water Park - China Water Park and Water Play price | Made-in-China.com
Seesaw water pump - DeepFUN
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