MÖSSBAUER STUDY OF THERMAL DECOMPOSITION PROCESSES OF PYCITE-BEARING POLYMETALLIC DRES D. N. Abishev, Yu. B. Voitkovskii, N. N. Razumovskaya, L. J. Sergasina, A. K. Kobzhasov et D. K. AbdrakhmanovaJ. Phys. Colloques, 41 C1 (1980) C1-397-C1-398DOI: https://doi.org/10.1051/jphyscol:19801153