| Source: The Printing Trades Magazine, 1909-1915 (incomplete run) Location: St.L. / 05 / P936 | |
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| Last Name: | Verster |
| First Name: | E. |
| Title: | Dr. |
| Volume: | V |
| Issue: | 6 |
| Date of Publication: | June, 1913 |
| Page: | 11 |
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