- Ingeokring Newsletter 2020/2021 No. 25 Winter (2803 downloads )
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- Ingeokring Newsletter 2013 Summer (3349 downloads )
- Ingeokring Newsletter 2011/2012 Winter (3289 downloads )
- Ingeokring Newsletter 2010 Summer (3291 downloads )
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- Ingeokring Newsletter 2008 Special Edition (3123 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (3163 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (3275 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (2796 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (3241 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (3543 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (3475 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (3391 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (4001 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (3338 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (3270 downloads )
- Ingeokring Newsletter 1994-1 Lente (3325 downloads )
- Ingeokring Newsletter 1993 Herfst (3462 downloads )
- Ingeokring Newsletter 1992-1993 Winter (3773 downloads )
- Ingeokring Newsletter 1992 Zomer (4168 downloads )
- Ingeokring Newsletter 1991-1992 Winter (4205 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (3225 downloads )
- Ingeokring Newsletter 1990-3 December (3377 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2705 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (3402 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (2861 downloads )