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Filters: Keyword is coconut shell  [Clear All Filters]
1990
M. Chaudhuri and Ghua, S., “Removal of arsenic (III) from groundwater by low-cost materials”, Asian environment, pp. p. 42-50: fig., tab., 1990.
1987
J. N. Kardile, Simple methods in water purification. Nasik, India: Foundation for Simplified Filters, 1987, p. 179 p.: fig., tab.
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