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20 មករា 2007 One should only be critical of the decisions which have been made voluntarily by millions of smallholder farmers when one has the fullest understanding of all the reasons which led to their making a change in their cropping, and particularly their staple food.
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28 តុលា 2014 Access to clean drinking water remains one of the greatest challenges in the world. The BioSand Filter is one method that can be used for purifying water at the household level. With this filter, contaminated water is filtered through a natural biological layer and then layers of sand, pebbles...
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20 មិនា 2014
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20 មិនា 2014
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20 មិនា 2014
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20 មិនា 2014
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20 មករា 2011
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20 មករា 2011
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20 មករា 2011
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2014 Presentations - ECHO East Africa Pastoralist Symposium
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