Season 37
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Episodios
1. Knowing about Language: Changing Voices
1h17 Sep 1990
2. Knowing about Language: That's Funny
1h24 Sep 1990
3. Knowing about Language: Who Says So?
1h1 Oct 1990
4. Knowing about Language: Over a Thousand Years
1h8 Oct 1990
1. Knowing about Language: Changing Voices
2. Knowing about Language: That's Funny
3. Knowing about Language: Who Says So?
4. Knowing about Language: Over a Thousand Years