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| BS4183-TABLE 2 | K7766 | BRITISH STANDARDS INSTITUTION |
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| DEFSTAN53-23 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| F21-202-101-1 | K7806 | G E C COMPUTER SERVICES LTD |
| M3X10CSKMS | K7766 | BRITISH STANDARDS INSTITUTION |