ISSN Record 2050-5639

Preserved : 1972: 1972(1-24), 1973: 1973(1-24), 1974: 1974(1-24), 1975: 1975(1-24, ), 1976: 1976(1-24, ), 1977: 1977(1-24, ), 1978: 1978(1-24, ), 1979: 1979(1-24, ), 1980: 1980(1-24, ), 1981: 1981(1-24, ), 1982: 1982(1-24, ), 1983: 1983(1-24, ), 1984: 1984(1-24, ), 1985: 1985(1-24, ), 1986: 1986(1-24, ), 1987: 1987(1-24, ), 1988: 1988(1-24, ), 1989: 1989(1-24, ), 1990: 1990(1-24, ), 1991: 1991(1-24, ), 1992: 1992(1-24), 1993: 1993(1-24), 1994: 1994(1-24, ), 1995: 1995(1-24)

Preserved : 1972 (1 to 24); 1973 (1 to 24); 1974 (1 to 24); 1975 (none, 1 to 24); 1976 (none, 1 to 24); 1977 (none, 1 to 24); 1978 (none, 1 to 24); 1979 (none, 1 to 24); 1980 (none, 1 to 24); 1981 (none, 1 to 24); 1982 (none, 1 to 24); 1983 (none, 1 to 24); 1984 (none, 1 to 24); 1985 (none, 1 to 24); 1986 (none, 1 to 24); 1987 (none, 1 to 24); 1988 (none, 1 to 24); 1989 (none, 1 to 24); 1990 (none, 1 to 24); 1991 (none, 1 to 24); 1992 (1 to 24); 1993 (1 to 24); 1994 (none, 1 to 24); 1995 (1 to 24)