Ad $ summary.

v.4:no.1 1976:Jan.-Mar.; v.4:no.2 1976:Jan.-June; v.4:no.3 1976:Jan.-Sept.; v.4:no.4 1976:Jan.-Dec.; v.5:no.1 1977; v.5:no.2 1977; v.5:no.4 1977; v.6:no.1 1978; v.6:no.2 1978; v.6:no.3 1978; v.6:no.4 1978; v.7:no.1 1979; v.7:no.2 1979; v.7:no.3 1979; v.7:no.4 1979; v.8:no.1 1980; v.8:no.2 1980; v.8:no.3 1980; v.8:no.4 1980; v.9:no.1 1981; v.9:no.2 1981; v.9:no.3 1981; v.10:no.1 1982; v.10:no.2 1982; v.10:no.3 1982; v.11:no.1 1983; v.11:no.2 1983; v.11:no.3 1983; v.12:no.1 1984; v.12:no.2 1984; v.12:no.3 1984; v.13:no.1 1985; v.13:no.2 1985; v.13:no.3 1985; v.14:no.1 1986; v.14:no.2 1986; v.15:no.1 1987; v.15:no.2 1987; v.15:no.3 1987; v.16:no.1 1988; v.16:no.3 1988; v.16:no.4 1988; v.18:no.1 1990; v.18:no.2 1990; v.18:no.3 1990; v.18:no.4 1990; v.19:no.1 1991; v.19:no.2 1991; v.19:no.3 1991; v.19:no.4 1991; 1992-1994; 1994:Jan-Sept; 1995:Jan-Dec; 1995:Jan-Sept; 1996:Jan.-Dec.; 1996:Jan-Sept; 1997:Jan-Sept; Book 1 1997:Jan-Dec; Book 2 1997:Jan-Dec; 1998:Jan-Mar; 1998:Jan-June; Book 1 1998:Jan-Dec; Book 2 1998:Jan-Dec; 1999:Jan/Sept; Book 1 1999:Jan-Dec; yr.1999 v.1; Book 2 1999:Jan-Dec; yr.1999 v.2; 2000 Jan.-June; 2000:Jan-Mar; 2000:Jan-Sep; 2001 Jan-Mar; 2001:Jan-Sep; 2001 Jan.-June; yr.2001 v.1; Book 1 2001:Jan-Dec; yr.2001 v.2; Book 2 2001:Jan-Dec; 2002:Jan./Sept.; 2002:Jan./Dec.:Book 1; 2002:Jan./Dec.:Book 2; 2003:Jan./June; 2003:Jan./Sept.; 2003:Jan./Mar.; 2003:Jan./Dec.:Book 1; 2003:Jan./Dec.:Book 2; 2004:Jan./Mar.; 2004:Jan./June; 2004:Jan./Sept.; 2004:Jan./Dec.:Book 1; 2004:Jan./Dec.:Book 2; 2005:Jan./Mar.; 2005:Jan./June; 2005:Jan-Sept.:Book 1; 2005:Jan./Dec.:Book 1; 2005:Jan-Sept.:Book 2; 2005:Jan./Dec.:Book 2; 2006 Jan./Sept.:Book 1; 2006 Jan./Sept.:Book 2