Title: Heisei 17-nendo tennen gasuka dōnyū sokushin kiban chōsa tennen gasu fukyū sokushin ni muketa ōkuchi gasu shijō ni okeru shijō kōzō oyobi juyōka no tennen gasu chōtatsu dōkō tō ni kansuru chōsa
Subjects: Gas industry, Energy industries
Places: Japan