Link to Series in Level 1 Subscription Site
Link to Series in Level 2 Subscription Site
Link to Series in Level 0 Subscription Site
1999 10 62-7621.
1999 09 363768·
1999 08 697741·
1999 07 813865·
1999 06 204050·
1999 05 3215.
1999 04 68-20497·
1999 03 6-11794·
1999 02 7-19558.
1999 01 90-5241.
1998 12 3015867·
1998 11 9221766.
1998 10 74-17312·
1998 09 908012.
1998 08 6920267·
1998 07 839084.
1998 06 94-15407.
1998 05 39-89·
1998 04 22-18512·
1998 03 48-4053.
1998 02 706508.
1998 01 694435.
1997 12 5220304.
1997 11 8213798.
1997 10 2711774.
1997 03 37-6030.
1997 02 47160.
1997 01 450·
1996 12 1410·
1996 11 24-20.
1996 10 20-74.
1996 09 57119.
1996 08 7-34.
1996 07 36-2986.
1996 06 930.
1996 05 12151.
1996 04 7-7721·
1996 03 7-9585·
1996 02 7612370·
1996 01 624895.
1995 12 39-9215·
1995 11 9117880.
1990 08 10-5000·
1990 07 262000·
1990 06 533000·
1990 02 71-3000·
1990 01 243000·
1989 12 48-3000.
1989 11 253000.
1989 09 53-3000.
1989 08 54-2000.
1989 07 99-2000·
1989 06 552000·
1989 05 695000.
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