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Where To Watch The Nature of Things Season 13

  1. 1Vanishing Peoples LacandonesNovember 6, 1972
  2. 2The Polar BearJanuary 8, 1973
  3. 3Grouse CountryJanuary 15, 1973
  4. 4Ice LoversJanuary 29, 1973
  5. 5Think Before You EatMarch 5, 1973
  6. 6Stockholm '72 Politics for SurvivalMarch 12, 1973
  7. 7Cities for PeopleMarch 19, 1973
  8. 8Migration Animals in CycleMarch 26, 1973
  9. 9Old EnoughApril 2, 1973
  10. 10Cities for PeopleApril 2, 1973
  11. 11RecyclingApril 9, 1973
  12. 12AcupunctureApril 16, 1973
  13. 14Vanishing Peoples YanoniamiMay 7, 1973