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In recent years there has been renewed interest in high -frequency acoustics, defined here as roughly the 5-50 kHz band. This band has historically included torpedo frequencies; however, recent… Continue Reading
Strategies for sanitation and hygiene in Ethiopia in the past focused more on the provision of information with the expectation that this will elicit change. However, much has not changed in the… Continue Reading
This paper summarises information from 20 UNICEF-assisted ecological sanitation projects in 12 countries. The projects varied widely in size from 95 users for a project with household urine diversion… Continue Reading