https://blog.p2pfoundation.net/project-of-the-day-solar-flower-a-diy-open-source-solar-energy-collector-for-heating-fluids/2012/11/01 Researching, documenting and promoting peer to peer practices Tue, 23 Oct 2012 10:45:38 +0000 hourly 1 https://wordpress.org/?v=5.5.15