Circular No. 20/2009/TT-BKHCN of September 30, 2009, on promulgation and implementation of “national technical regulations on gasoline, diesel fuel oils and biofuels”

Circular No. 20/2009/TT-BKHCN of September 30, 2009, on promulgation and implementation of “national technical regulations on gasoline, diesel fuel oils and biofuels”