A Field Guide to Biochar Water Treatment
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A Field Guide to Biochar Water Treatment
Andean biologic and geologic observatory
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Field Notebook
Andean biologic and geologic observatory
Josh Kearns
Jan 10
7
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A Field Guide to Biochar Water Treatment
Andean biologic and geologic observatory
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low-tech water collection and filtration at high elevation
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1 Comment
Gregory Pettys
Jan 24
neat!
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neat!