%0 Journal Article %T Preface %A Istadi Istadi %J Bulletin of Chemical Reaction Engineering & Catalysis %D 2011 %I Diponegoro University %R 10.9767/bcrec.6.2.1221.iii %X doi:10.9767/bcrec.6.2.1221.0 %U http://ejournal.undip.ac.id/index.php/bcrec/article/view/1221