Year of Publishing
"Experience shows it is relatively easy to make one good pump but it is very difficult to make a larger number of good pumps."
This working paper may be of interest to those researching the evolution of handpump technology.
Baumann, E. (1985) Handpump Development - General Aspects. Working Paper , Skat , Skat , St. Gallen, Switzerland
Handpump Development - General Aspects
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