SUBJECT
Hygiene, Rural
Hygiene, Public
7
Health surveys
4
Folk medicine
3
Sanitary engineering
3
Sanitation
3
Human ecology
2
Rural health services
2
Case studies
1
Community health services
1
Health education
1
Health services
1
Health services administration--Philippines
1
Medical care
1
Nutirtion
1
Philippines
1
Public health
1
Rural schools
1
Underdeveloped areas
1