霍夫曼 ((Hoffman, Anne))

全球再生能源新趨勢 = Global energy : fire from within - geothermal heat. 5. 地心之火-地熱 by: DW-Transtel; Deutsche Welle; Hoffman, Anne; 霍夫曼 ((Hoffman, Anne)) (Projected and video material) , [導演]

全球再生能源新趨勢 = Global energy : the inexhaustible source - solar energy. 2. 耗不盡的資源-太陽能 by: DW-Transtel; Deutsche Welle; Hoffman, Anne; 霍夫曼 ((Hoffman, Anne)) (Projected and video material) , [導演]