T4pbike_shallow_well_pumping.jpg (624 × 400 pixels, file size: 39 KB, MIME type: image/jpeg)
ported from technologyforthepoor.com with permission from Job Ebenezer, PhD.
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current | 04:58, 9 May 2008 | 624 × 400 (39 KB) | Curtbeckmann (talk | contribs) | ported from technologyforthepoor.com with permission from Job Ebenezer, PhD. |
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