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| 0001104657-20-000083-index.html | 2020-06-19 08:30:52 | |
| 0001104657-20-000083.txt | 2020-06-19 08:30:52 | |
| mtrn_201911k.htm | 234964 | 2020-06-19 08:30:52 |
| mtrn_ex231x201911k.htm | 2673 | 2020-06-19 08:30:52 |