Estudios fronterizos

no.1 1983; no.2 1983; no.4-5 1984; no.6 1985; no.7-8 1985; no.9 1986; no.10-11 1986; no.12-13 1987; no.14 1987; no.15-16 1988; no.17 1988; no.18-19 1989; no.20 1989; no.21 1990; no.22 1990; no.23 1990; no.24-25 1991; no.26 1991; no.27-28 1992; no.29 1992; no.30 1993; no.31-32 1993; no.33 1994; no.34 1994; no.35-36 1995; no.37-38 1996; no.39 1997; no.40 1997; n.s. v.1:1 2000; n.s. v.1:2 2000; n.s. v.1 no.1-2; n.s. v.2:3 2001; n.s. v.2:4 2001; n.s. v.2:no.3-4(2001); n.s. v.3:5 2002; n.s. v.3:no.5-6(2002); n.s. v.4:7; n.s. v.4:no.7-8(2003); n.s. v.5:9 2004; n.s. v.5:10 2004; n.s. v.5:no.9-10(2004); n.s. v.6:no.11-12(2005); n.s. v.7:no.13-14(2006)