Tumbaku : Tofauti kati ya masahihisho
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Mstari 28:
==Viungo vya Nje==
* [http://www.tobaccoleaf.org International Tobacco Growers' Association]
* [http://news.bbc.co.uk/2/hi/health/3300769.stm Kuhusu Umoja wa Nchi za Ulaya kupiga marufuku tumbaku]
* [http://www.tobacco.org/resources/history/Tobacco_History.html/ Historia ya tumbaku]
* [https://archive.org/details/tobaccoarchives UCSF Tobacco Industry Videos Collection]
* [https://www.cdc.gov/tobacco/data_statistics/fact_sheets/fast_facts/index.htm CDC - Kuhusu tumbaku na uvutaji wa tumbaku]
* [http://www.who.int/tobacco/global_interaction/tobreg/en/ TobReg] - WHO Study Group on Tobacco Product Regulation
* [http://www.cancer.org/cancer/cancercauses/tobaccocancer/secondhand-smoke Takwimu kuhusu madhara ya moshi wa tumbaku]
* [http://m.voanews.com/a/a-13-2005-11-30-voa79-67514457/284004.html Wanasayansi wanatafuta matumizi bora ya tumbaku]
[[Jamii:mazao]]
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