- Ingeokring Newsletter 2020/2021 No. 25 Winter (3086 downloads )
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- Ingeokring Newsletter 2014 No. 22 Autumn (4009 downloads )
- Ingeokring Newsletter 2013 Summer (3626 downloads )
- Ingeokring Newsletter 2011/2012 Winter (3596 downloads )
- Ingeokring Newsletter 2010 Summer (3574 downloads )
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- Ingeokring Newsletter 2008 Special Edition (3360 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (3461 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (3558 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (3004 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (3520 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (3858 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (3770 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (3687 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (4288 downloads )
- Ingeokring Newsletter 1997 No. 5 Spring (3597 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (3589 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (3566 downloads )
- Ingeokring Newsletter 1994-1 Lente (3614 downloads )
- Ingeokring Newsletter 1993 Herfst (3796 downloads )
- Ingeokring Newsletter 1992-1993 Winter (4085 downloads )
- Ingeokring Newsletter 1992 Zomer (4494 downloads )
- Ingeokring Newsletter 1991-1992 Winter (4514 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (3539 downloads )
- Ingeokring Newsletter 1990-3 December (3697 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2854 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (3692 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (3048 downloads )