Nenryō Kenkyūjo (Japan). Dai 5-bu & Shigen Gijutsu Shikenjo (Japan). (1951). Sentan =: Coal preparation review. Kōgyō Gijutsuchō Nenryō Kenkyūjo Daigobu.
Lua i Stíl Chicago (17ú heag.)Nenryō Kenkyūjo (Japan). Dai 5-bu agus Shigen Gijutsu Shikenjo (Japan). Sentan =: Coal Preparation Review. Kawaguchi-shi: Kōgyō Gijutsuchō Nenryō Kenkyūjo Daigobu, 1951.
Lua MLA (8ú heag.)Nenryō Kenkyūjo (Japan). Dai 5-bu agus Shigen Gijutsu Shikenjo (Japan). Sentan =: Coal Preparation Review. Kōgyō Gijutsuchō Nenryō Kenkyūjo Daigobu, 1951.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.