- Ingeokring Newsletter 2020/2021 No. 25 Winter (2925 downloads )
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- Ingeokring Newsletter 2014 No. 22 Autumn (3840 downloads )
- Ingeokring Newsletter 2013 Summer (3467 downloads )
- Ingeokring Newsletter 2011/2012 Winter (3424 downloads )
- Ingeokring Newsletter 2010 Summer (3426 downloads )
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- Ingeokring Newsletter 2008 Special Edition (3241 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (3290 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (3396 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (2888 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (3367 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (3675 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (3605 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (3521 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (4133 downloads )
- Ingeokring Newsletter 1997 No. 5 Spring (3438 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (3459 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (3397 downloads )
- Ingeokring Newsletter 1994-1 Lente (3444 downloads )
- Ingeokring Newsletter 1993 Herfst (3606 downloads )
- Ingeokring Newsletter 1992-1993 Winter (3918 downloads )
- Ingeokring Newsletter 1992 Zomer (4305 downloads )
- Ingeokring Newsletter 1991-1992 Winter (4339 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (3350 downloads )
- Ingeokring Newsletter 1990-3 December (3521 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2773 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (3540 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (2949 downloads )