DECIMAL CLASSIFI CATION 
331.82 Working conditions ~~ Places of labor 
See also 613.6 Hygiene; 622.8 Mining; 614.8 Protection of life 
821 Dangerous, uncomfortable, unhelthful quarters 
822 Industrial hygiene Medical supervision Preven- 
tion of occupational diseases 
See also 331.827 Improvement of working conditions in factories, stores, 
offises etc. 
Physical examination 
Prevention of occupational diseases 
Hospitals 
Nursing 
Surgical aid 
First aid Better clast in 614.8 
Dental work 
Safety Accidents Occupational hazards 
See also 331.25441 Accident insurance; 614.8 Protection of human life 
from accidents 
Causes of accidents 
Safety committees 
Preventiv and protectiv safety mesures 
Better clast in 614.8 
Education: lectures, moving pictures 
Safety devices and appliances 
Responsibility for accidents 
Legal reparation for accidents 
See also 331.825 Employer's liability; reparation 
Aid by public or private charity or workers associations 
Better clast in 361-362 
Pires 
Causes 
Preventiv and protectiv mesures 
Education: lectures, moving pictures 
Organization 
Drils Contests 
i 
5 
501 
51 
52 
53 
34 
824 
823 
Employer's liability Reparation 
Employer’s liability 
See also 331.253 Group insurance 
Workmen's compensation 
026 
Ro 
{mprovement of working conditions in factories, stores, 
offises etc. 
Sanitation 
Baths, lavatories, toilet rooms 
Lighting 
Heating 
Ventilating 
Comfort 
Coat rooms, rest rooms, lunch rooms, cafeterias 
Morality Separation of the sexes