Mes: Noviembre - 1991
| Código | Título | Fecha publicación | Estado | Carro de compras |
|---|---|---|---|---|
| ISO 8423:1991 |
Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation)
|
07/11/1991 | No Vigente | |
| ISO 9443:1991 |
Heat-treatable and alloy steels -- Surface quality classes for hot-rolled round bars and wire rods -- Technical delivery conditions
|
07/11/1991 | No Vigente |