Ключевые слова: agriculture, alternative, alternative fuel, background, business, commodity, construction, craftsmanship, cut, deforestation, ecology, energy, environment, fire, firewood, forest, forestry, fuel, harvest, harvester, harvesting, industrial, industry, jack, log, logging, lumber, material, natural, nature, pine, product, rainforest, renewable, saw, source, sustainability, sustainable, technology, timber, tool, transport, tree, truck, trunk, vehicle, wood, work, worker, yard,