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Air Pollution. --- Ecology. --- Environment. --- Food Supply. --- Water Supply.
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Lichens --- air pollution --- ecology --- heavy metal tolerance --- oxygen balance --- pesticides --- plant protection --- symposium proceedings --- water pollution
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AIR POLLUTION --- CHIMNEYS --- DUST CONTROL --- MEASURING INSTRUMENTS --- MODEL TESTS --- SMOKE --- DUST FILTERS --- FALLOUT --- EXHAUST GASES --- FUMES --- MOTOR VEHICLES --- ELECTRON MICROSCOPES --- INDUSTRIAL WASTES --- SULFUR DIOXIDE --- VEGETATION --- ELECTRIC POWER PLANTS --- CONTAMINANTS --- LAW JURISPRUDENCE --- AIR POLLUTION --- CHIMNEYS --- DUST CONTROL --- MEASURING INSTRUMENTS --- MODEL TESTS --- SMOKE --- DUST FILTERS --- FALLOUT --- EXHAUST GASES --- FUMES --- MOTOR VEHICLES --- ELECTRON MICROSCOPES --- INDUSTRIAL WASTES --- SULFUR DIOXIDE --- VEGETATION --- ELECTRIC POWER PLANTS --- CONTAMINANTS --- LAW JURISPRUDENCE
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