I love how Durga teaches about Invisible Structures in this video. What would you add to the conversation about this?
View this free lesson here: http://organiclifeguru.com/lesson/invisible-structures/
This is one video out of a 49 videos that make up a permaculture design course filmed over 2 weeks in Costa Rica.
The full permaculture design course course material is here: http://organiclifeguru.com/course/permaculture-design-course/ 
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