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====Manufacturing ====
==Cost==
* [http://en.wikipedia.org/wiki/Hydraulic_ram Hydraulic Ram article on Wikipedia]
* [http://www.ashdenawards.org/winners/aidfoundation Article on the AID Foundation hydraulic ram, winner of the Ashden Award in 2007]
* [http://practicalactionconsulting.org/docs/technical_information_service/hydraulic_ram_pumps.pdf Hydraulic ram pumps], Practical Action.
* [http://www2.warwick.ac.uk/fac/sci/eng/research/dtu/pubs/tr/lift/ Several in-depth articles on the function and construction of hydraulic rams, including detailed drawings of a low-cost and tested design. Development Technology Unit (DTU), University of Warwick, UK]
* [http://www.clemson.edu/irrig/Equip/ram.htm Low cost self-made pump], Clemson University.