- Ingeokring Newsletter 2020/2021 No. 25 Winter (2052 downloads )
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- Ingeokring Newsletter 2014 No. 22 Autumn (2815 downloads )
- Ingeokring Newsletter 2013 Summer (2498 downloads )
- Ingeokring Newsletter 2011/2012 Winter (2498 downloads )
- Ingeokring Newsletter 2010 Summer (2486 downloads )
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- Ingeokring Newsletter 2008 Special Edition (2340 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (2336 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (2445 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (2204 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (2414 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (2681 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (2612 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (2638 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (3147 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (2546 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (2480 downloads )
- Ingeokring Newsletter 1994-1 Lente (2443 downloads )
- Ingeokring Newsletter 1993 Herfst (2585 downloads )
- Ingeokring Newsletter 1992-1993 Winter (2834 downloads )
- Ingeokring Newsletter 1992 Zomer (3253 downloads )
- Ingeokring Newsletter 1991-1992 Winter (3293 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (2401 downloads )
- Ingeokring Newsletter 1990-3 December (2550 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2193 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (2547 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (2304 downloads )