Ключевые слова: backlit, biofuel, biofuels, biorefinery, boat, building, business, cellulose, chimney, day, environment, europe, european, factory, fibre, finland, finnish, horizontal, industrial, industry, kaukas, kymmene, lake, lappeenranta, log, manufacture, nobody, paper, pipe, pollution, production, pulp, pulping, saimaa, silos, smog, smoke, smokestack, steam, summer, sun, sunny, trunk, upm, upmbiofuels, upmkymmene, water, wood, workplace,