2008 - Ext/CrS, 3/09
2007 - Ext/CrS, 3/08
2006 - Ext/CrS, 4/07
2005 - Ext/CrS, 4/06
2004 - Ext/CrS, 4/05
2003 - Ext/CrS, 3/04
2002 - Ext/CrS, 5/03
2001 - Ext/CrS, 4/02
2000 - Ext/CrS, 4/01
1999 - Ext/CrS, 4/00
1998 - Ext/CrS, 4/99
1997 - Ext/CrS, 4/98
1996 - Ext/CrS, 4/97
1995 - Ext/CrS, 3/96
1994 - Ext/CrS, 4/95
1993 - Ext/CrS, 4/94
1992 - Ext/CrS, 4/93
1991 - Ext/CrS, 4/92
1990 - Ext/CrS, 4/91
1989 - Ext/CrS, 4/90
Older issues can be found here