Num. 39 (1996): Third Term

Num. 38 (1996): Second Term

Num. 37 (1996): First Term

Num. 36 (1995): Third Term

Num. 35 (1995): Second Term

Num. 34 (1995): First Term

Num. 33 (1994): Third Term

Num. 32 (1994): Second Term

Num. 31 (1994): First Term

Num. 30 (1993): Third Term

Num. 29 (1993): Second Term

Num. 28 (1993): First Term

Num. 27 (1992): Third Term

Num. 26 (1992): Second Term

Num. 25 (1992): First Term

Num. 24 (1991): Third Term

Num. 23 (1991): Second Term

Núm. 22 (1991): Primer Cuatrimestre

Núm. 21 (1990): Tercer Cuatrimestre

Núm. 20 (1990): Segundo Cuatrimestre

Núm. 19 (1990): Primer Cuatrimestre

Num. 18 (1989): Third Term

Núm. 17 (1989): Segundo Cuatrimestre

Núm. 16 (1989): Primer Cuatrimestre

Num. 15 (1988): Third Term