新・日本砂漠化-22 地球温暖化防止にスースー「すす」が!! even an ignorant japanese might understand the reason that those countries of the developed nation never mention the black carbon does not call a problem for prevention of global warming(いくら無知な日本人でも先進国の国々が 地球温暖化 防止にブラックカーボンが問題と言わない理由がわかると思うが…)!
