Friguia, Pechiney, Accord de concession, Avenant au Contrat, 1973 (Contrat Principal) |
Friguia, Pechiney, Amendment, 1987 |
Friguia, Pechiney, Accord de Concession, Avenant au Contrat, 1975 |
Friguia, Pechiney, Accord de concession, Avenant au Contrat, Annexe au Contrat, 1973 |