Adsorpsi isotermal karbon dioksida dan metana pada karbon aktif berbahan dasar batubara sub bituminus Indonesia untuk pemurnian dan penyimpanan gas alam =Adsorption isotherms carbon dioxide and methane on activated carbon of sub bituminous coal Indonesian as raw material for purification and storage of natural gas - Awaludin Martin, author (Fakultas Teknik Universitas Indonesia, 2010)