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Thomas F. Riesing, Ph.D. Algae for Liquid Fuel Production. Oakhaven Permaculture Center. Spring 2006 [2006-12-18]. (原始内容存档于2020-12-19). Note: originally published in issue #59 of Permaculture Activist
Thomas F. Riesing, Ph.D. Algae for Liquid Fuel Production. Oakhaven Permaculture Center. Spring 2006 [2006-12-18]. (原始内容存档于2020-12-19). Note: originally published in issue #59 of Permaculture Activist