1. Acute respiratory infections in children: respiratory infections programme and the programme support service;World Health Organisation,1987
2. The health consequences of involuntary smoking;US Surgeon General,1986
3. Environmental tobacco smoke. measuring exposures and assessing health effects;US National Research Council,1986
4. Biofuels, air pollution, and health: a global review;Smith,1987
5. Air pollution in native huts in the highlands of New Guinea;Cleary;Arch Envir Health,1968