Title: Kūru shiti suishin jigyō "chikasui tō katsuyōgata chichūnetsu riyōgata" chikasui ketsujo chiiki ni okeru chichūnetsu hīto ponpu shisutemu jisshō jigyō hōkokusho : Heisei 21-nendo
Subjects: Ground source heat pump systems
Places: Japan, Yokohama-shi (Kanagawa-ken)