- Ingeokring Newsletter 2020/2021 No. 25 Winter (2948 downloads )
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- Ingeokring Newsletter 2013 Summer (3503 downloads )
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- Ingeokring Newsletter 2010 Summer (3462 downloads )
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- Ingeokring Newsletter 2008 Special Edition (3271 downloads )
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- Ingeokring Newsletter 2006 No. 1 Vol. 13 December (3332 downloads )
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- Ingeokring Newsletter 2003 No. 2 Vol. 10 (3431 downloads )
- Ingeokring Newsletter 2003 No. 1 Vol. 9 (2917 downloads )
- Ingeokring Newsletter 2002 No. 10 Summer (3403 downloads )
- Ingeokring Newsletter 2001 No. 9 Summer (3713 downloads )
- Ingeokring Newsletter 1999 No. 8 Summer (3649 downloads )
- Ingeokring Newsletter 1998 No. 7 Summer (3562 downloads )
- Ingeokring Newsletter 1997 No. 6 Autumn (4170 downloads )
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- Ingeokring Newsletter 1995 No. 2 Autumn (3484 downloads )
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- Ingeokring Newsletter 1994-2 Herfst (3440 downloads )
- Ingeokring Newsletter 1994-1 Lente (3488 downloads )
- Ingeokring Newsletter 1993 Herfst (3639 downloads )
- Ingeokring Newsletter 1992-1993 Winter (3961 downloads )
- Ingeokring Newsletter 1992 Zomer (4349 downloads )
- Ingeokring Newsletter 1991-1992 Winter (4376 downloads )
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- Ingeokring Newsletter 1991-0 Lente-Zomer (3400 downloads )
- Ingeokring Newsletter 1990-3 December (3561 downloads )
- Ingeokring Newsletter 1990-2 Juni Special (2794 downloads )
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- Ingeokring Nieuwsbrief 1989-12 December (3577 downloads )
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- Ingeokring Nieuwsbrief 1983-09 September (2978 downloads )