Columbia subject headings:
Education--Estonia.
Moral education--Estonia.
Social values--Estonia.
Teenagers--Estonia--Attitudes.
Teenagers--Estonia--Conduct of life.
Harvard subject headings:
Education--Estonia
Moral education--Estonia.
Social values--Estonia.
Teenagers--Estonia--Attitudes.
Teenagers--Estonia--Conduct of life.
Princeton subject headings:
Education--Estonia.
Moral education--Estonia.
Social values--Estonia.
Teenagers--Estonia--Attitudes.
Teenagers--Estonia--Conduct of life.