Document
Pause Period and Run Presentation (BSF for PI)
This presentation describes how the biosand filter works while its being used (Designed for Lesson Plan 11 in the BSF for PI Trainer Manual)
Document
Pause Period and Run Presentation (BSF for PI)
This presentation describes how the biosand filter works while its being used (Designed for Lesson Plan 11 in the BSF for PI Trainer Manual)
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