MÖSSBAUER CHARACTERIZATION OF IRON (II)-IRON (III) METALLORGANIC COMPOUNDS WITH POLYMERICLIGAND (P4VP) N. BURRIESCI, M. PETRERA et G. PARRAVANO J. Phys. Colloques, 37 C6 (1976) C6-472 DOI: 10.1051/jphyscol:1976693