Columbia subject headings:
Children--Amazon River Region--Social conditions.
Children--Ecuador--Social conditions.
Children--Health and hygiene--Amazon River Region.
Children--Health and hygiene--Ecuador.
Children--Nutrition--Amazon River Region.
Children--Nutrition--Ecuador.
Children--Services for--Amazon River Region.
Children--Services for--Ecuador.
Mothers--Amazon River Region--Social conditions.
Mothers--Ecuador--Social conditions.
Mothers--Health and hygiene--Amazon River Region.
Mothers--Health and hygiene--Ecuador.
Mothers--Nutrition--Amazon River Region.
Mothers--Nutrition--Ecuador.
Mothers--Services for--Amazon River Region.
Mothers--Services for--Ecuador.
Harvard subject headings:
Children--Amazon River Region--Nutrition.
Children--Amazon River Region--Social conditions.
Children--Ecuador--Nutrition.
Children--Ecuador--Social conditions.
Children--Health and hygiene--Amazon River Region.
Children--Health and hygiene--Ecuador.
Children--Services for--Amazon River Region.
Children--Services for--Ecuador.
Mothers--Amazon River Region--Nutrition.
Mothers--Amazon River Region--Social conditions.
Mothers--Ecuador--Nutrition.
Mothers--Ecuador--Social conditions.
Mothers--Health and hygiene--Amazon River Region.
Mothers--Health and hygiene--Ecuador.
Mothers--Services for--Amazon River Region.
Mothers--Services for--Ecuador.
Princeton subject headings: