(1976). Air quality in selected urban areas 1973-1974. Genewa : World Health Organization.
Chicago Style CitationAir Quality in Selected Urban Areas 1973-1974. Genewa : World Health Organization, 1976.
MLA CitationAir Quality in Selected Urban Areas 1973-1974. Genewa : World Health Organization, 1976.
Warning: These citations may not always be 100% accurate.