www.earthcare.org        Earthcare Organization  

www.opabrazil.com      OPA - Organization of Permaculture and Art

www.permacultura.org    PAL - Permacultura America Latina    

www.permacultura.org.br/rbp/ipa     IPA www.permacultura.org.br/ipec        IPEC www.permacultura.org.br/ipep        IPEP