Prisma.

no.1-7 (1971-72, lacks no.5); v.1 1972; v.2; v.2 1973; v.3; v.3-4 1974-1975; v.4:3-6; v.5; v.5 1976; v.6 1977; v.7:7-10; v.7 1978; v.8:1-6; v.8:7-12; v.8 1979; v.9:1-6; v.9:7-12; v.10:2-6; v.10:7-12; v.11:1-6; v.11:7-12; 1982 v.11 no.1-6; 1982 v.11 no.7-12; 1983 v.12 no.1-6; 1983 v.12 no.7-12; 1984 v.13 no.1-6; 1984 v.13 no.7-12; 1985 v.14 no.1-6; 1985 v.14 no.7-12; 1986 v.15 no.1-6; 1986 v.15 no.7-12; 1987 no.1-8; 1988 no.1-9; 1990 no.1-8; 1990-1991 no.49-51; 1991 no.1-6; 1991 no.7-11; 1991 no.12; 1992 no.1-6; 1993 no.1-7; 1994 no.1-7; 1994 no.8-12; 1995 no.1-6; 1995 no.7-10; 1996 no.1-6; 1997 no.1-7; 1998 v.27 no.1; 1996 no.7-9 spec issue