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From OHO - search engine for sustainable open hardware projects
This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
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- Build a Hydraulic Ram Pump - do it yourself - MOTHER EARTH NEWS + (Follow our directions to make an inexpensi … Follow our directions to make an inexpensive but effective hydraulic ram pump.<br/><br/> May/June 1979<br/><br/>The completed hydraulic ram pump is a simple device.<br/><br/>Cross-sectional diagram of the hydraulic ram pump.<br/><br/>The search for a "perpetual motion"...ram of the hydraulic ram pump.<br/><br/>The search for a "perpetual motion"...)