Title: Heisei 19-nendo shōsansei chisso jōka gijutsu kaihatsu fukyū tō chōsa (hatachi no chikufun taihi oyobi shisetsu engei no dojō kara yōdatsusuru shōsansei chisso no shintō yokusei gijutsu) jisshō chōsa kekka hōkokusho
Subjects: Fixation, Nitrogen
Places: Japan