Kinzoku Zairyō Gijutsu Kenkyūjo (Japan)

• JIS kikai kōzōyō hagane no kijunteki hirō tokusei
• Kagaku Gijutsuchō Kinzoku Zairyō Gijutsu Kenkyūjo yōran
• Nijūnen no ayumi
• Sanjūnen no ayumi
• Zukai kinzoku zairyō gijutsu yōgo jiten