ESTIMATION OF FIRING TEMPERATURES OF ANCIENT ROOFING TILES BY Fe-57 MÖSSBAUER SPECTROSCOPY M. Takeda, O. Kawakami, H. Kobayashi et T. Tominaga J. Phys. Colloques, 40 C2 (1979) C2-483-C2-484 DOI: 10.1051/jphyscol:19792168