„Teach your children" - Dana ?

Hello, everyone!
In 1971 or 1972 saw a music programm on TV - I' m not sure if it was Eurovision or Unicef or Unesco programm. Dana (Dana Rosemary Scallon) sang famous song by CSNY - "Teach your children well". (Besides that I remember the song by Miguel Rios- United, being on this programm ) There is no "Teach your children well" in Dana's discography. Where can I buy this song? Do you have any further information? Poor quality mp3 link:
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