NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN VDE 0750-21 ; VDE 0750-21:1989-03 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ISO 497 | 1973-05 | Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers More |
