DIN EN ISO 9999 [Withdrawn] referenced in following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN EN ISO 11334-4 | 1999-12 | Walking aids manipulated by one arm - Requirements and test methods - Part 4: Walking sticks with three or more legs; German version EN ISO 11334-4:1999 More |
| DIN-Fachbericht 116 | 2002 | Standardisierung in der deutschen Dienstleistungswirtschaft - Potenziale und Handlungsbedarf More |
