Sean-rwsn
A diagram illustrating the pumping action of a rope pump. Developed by Skat for the Rural Water Supply Network (RWSN) Source: http://www.rwsn.ch/prarticle.2005-10-25.9856177177/prarticle.2005-10-26.2582788867/prarticle.2008-12-04.2105225472/prarticle.2009
