African study monographs.

no.1 1982; no.2 1984; no.3 1984; no.4 1985; no.1-6 1982-1987; no.5 1987; no.6 1987; no.7-8 1987-1988; no.7-13 1987-1990; no.11 1990; no.12 1990; no.13 1990; no.14 1991; no.15-16 1991; no.17 1992; no.18 1992; no.19 1992; no.14-20 1991-1994; no.20 1994; no.21 1994; no.22 1996; no.23 1996; no.24 1996; no.25 1998; no.22-27 1996-2001; no.26 2001; no.27 2001; no.28 2003; no.30 2005; no.31 2005; no.32 2005; no.33 2006; no.34 2007; no.35 2007; no.36 2007; no.37 2007; no.38 2008; no.39 2008