- Ingeokring Newsletter 2020/2021 No. 25 Winter (2503 downloads )
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- Ingeokring Newsletter 2014 No. 22 Autumn (3340 downloads )
- Ingeokring Newsletter 2013 Summer (3019 downloads )
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- Ingeokring Newsletter 2010 Summer (2968 downloads )
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- Ingeokring Newsletter 2008 Special Edition (2807 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (2805 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (2941 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (2556 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (2920 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (3184 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (3106 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (3073 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (3646 downloads )
- Ingeokring Newsletter 1997 No. 5 Spring (2990 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (2990 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (2931 downloads )
- Ingeokring Newsletter 1994-1 Lente (2946 downloads )
- Ingeokring Newsletter 1993 Herfst (3105 downloads )
- Ingeokring Newsletter 1992-1993 Winter (3387 downloads )
- Ingeokring Newsletter 1992 Zomer (3779 downloads )
- Ingeokring Newsletter 1991-1992 Winter (3813 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (2866 downloads )
- Ingeokring Newsletter 1990-3 December (3027 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2496 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (3052 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (2640 downloads )