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DIN ISO 9177-1:1990-03
Mechanical pencils; classification, dimensions, performance requirements and testing; identical with ISO 9177-1:1989
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Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 03/01/1990 |
| Page Count | 8 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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