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Filters: Keyword is hand pumps and Author is Calorama -Elburg, NL  [Clear All Filters]
1995
N. L. Calorama - Elburg, «Handpumps», vol. no. 4. Calorama Rural Development Service, Elburg, The Netherlands, p. 59 p.: fig., 1995.
1994
N. L. Calorama - Elburg, «Information on the construction of "low cost" rural water supplies». Calorama Rural Development Service, Elburg, The Netherlands, p. 24 p.: ill., 1994.
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