Ciencia e cultura
| Año |
Volumen |
Número |
|
2002
|
52
|
3
|
|
2000
|
52
|
2
|
6
|
4-5
|
|
2000
|
51
|
5-6
|
|
1999
|
51
|
1
|
2
|
3-4
|
|
1998
|
s/v
|
50
|
|
1998
|
50
|
1
|
4
|
5
|
6
|
2-3
|
|
1997
|
49
|
3
|
4
|
1-2
|
5/6
|
5-6
|
|
1996
|
48
|
3
|
4
|
1-2
|
5-6
|
|
1995
|
47
|
3
|
4
|
1-2
|
5-6
|
|
1994
|
46
|
3
|
4
|
1-2
|
5-6
|
|
1993
|
45
|
1
|
2
|
5
|
6
|
3-4
|
|
1992
|
44
|
1
|
5
|
6
|
|
1991
|
43
|
1
|
5
|
6
|
|
1989
|
41
|
1
|
4
|
8
|
10
|
|
1988
|
40
|
3
|
|
1987
|
39
|
3
|
|
1986
|
38
|
1
|
2
|
3
|
4
|
5
|
6
|
8
|
9
|
12
|
|
1985
|
37
|
5
|
7
|
8
|
9
|
10
|
11
|
12
|
|
1982
|
34
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
|
1981
|
s/v
|
33
|
331
|
332
|
333
|
334
|
|
1981
|
33
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
|
1980
|
s/v
|
327
|
329
|
3212
|
|
|
1980
|
32
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
|
1979
|
s/v
|
31
|
|
1979
|
31
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
|
1978
|
32
|
|