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Ключевые слова:
agriculture, anaerobic, architecture, biogas, biology, biology class, biomass, blue, cereal plant, corn crop, crop, drying, energy, engineering, environment, factory, farm, field, fuel and power generation, gas, grain elevator, grain storage, industry, natural, processed grains, seed, silo, silos, silos harvesting, sky, steel, storage, storage gas, tower,