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Horizon: 1991x3
Smokers Can Harm Your Health
Horizon investigates the case against passive smoking and reveals new evidence of its danger.
1991 - 1Sudden Death Jan. 07, 1991- 1991 - 3Smokers Can Harm Your Health Jan. 21, 1991
- 1991 - 5Small Problems with the Mirror Feb. 04, 1991
- 1991 - 9The Curse of Karash Feb. 25, 1991
- 1991 - 13Measuring the Roof of the World Mar. 25, 1991
- 1991 - 14The First Americans Apr. 15, 1991
- 1991 - 16Colonising Cyberspace Apr. 29, 1991
- 1991 - 17Emerging Viruses May. 13, 1991
- 1991 - 19Of Big Bangs, Stick Men and Galactic Holes Jun. 03, 1991
- 1991 - 23T-Rex Exposed Jul. 01, 1991
