Piridina: Perbedaan revisi

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* [http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc03/icsc0323.htm International Chemical Safety Card 0323]
* [http://www.cdc.gov/niosh/npg/npgd0541.html NIOSH Pocket Guide to Chemical Hazards]
* [httphttps://www.organic-chemistry.org/synthesis/heterocycles/pyridines.shtm Synthesis of pyridines (overview of recent methods)]
 
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