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So much to learn01.04.1984 
 
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Rethinking the unthinkable — effective excreta disposal in emergency situations01.07.1996 
 Thoughts about the needs of people living in refugee camps usually focus on food, water, and medical care. Who wants to dwell on the unpleasant (if necessary) removal of vast amounts of human waste? Technical solutions can be found if fresh, creative thinking is applied to sanitation engineering.
