Columbia subject headings:
Child development--Bolivia.
Child development--Peru.
Child health services--Bolivia.
Child health services--Peru.
Children--Health and hygiene--Bolivia.
Children--Health and hygiene--Peru.
Harvard subject headings:
Child development--Bolivia.
Child development--Peru.
Child health services--Bolivia.
Child health services--Peru.
Children--Health and hygiene--Bolivia.
Children--Health and hygiene--Peru.
Princeton subject headings:
Child development--Bolivia.
Child development--Peru.
Child health services--Bolivia.
Child health services--Peru.
Children--Health and hygiene--Bolivia.
Children--Health and hygiene--Peru.