Episode 32 Erica Wisner On Rocket Mass Heaters, Her New Book, Fire Sense & Life
A Regenerative Future with Matt Powers - Podcast készítő Matt Powers
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Keep up with the Wisners here: http://www.ernieanderica.info The Rocket Mass Heaters Builder's Guide: http://www.newsociety.com/Books/R/The-Rocket-Mass-Heater-Builder-s-Guide
