InTech.

v.26 1979 Jan-Jun; v.26 1979 Jul-Dec; v.27 1980 Jan-Jun; v.27 1980 Jul-Dec; v.28 1981 Jan-Jun; v.28 1981 Jul-Dec; v.29 1982 Jan-Jun; v.29 1982 Jul-Dec; v.30 1983 Jan-Jun; v.30 1983 Jul-Dec; v.31 1984 Jan-Jun; v.31 1984 Jul-Dec; v.32 1985 Jan-Jun; v.32 1985 Jul-Dec; v.33 1986 Jan-Jun; v.33 1986 Jul-Dec; v.34 1987 Jan-Jun; v.35 1988 Jan-Jun; v.35 1988 Jul-Dec; v.36 1989 Jan-Jun; v.36 1989 Jul-Dec; v.37 1990 Jan-Dec; v.38:1-6 JA-JE(1990); v.38 1991 Jan-Jun; v.39 1992 Jan-Jun; v.39 1992 Jul-Dec; v.40 1993 Jan-Jun; v.40 1993 Jul-Dec; v.42 1995 Jan-Jun; v.42 1995 Jul-Dec; v.43 1996 Jan-Jun; v.43 1996 Jul-Dec; v.44 1997 Jan-Jun; v.44 1997 Jul-Dec; v.45 1998 Jan-Jun; v.45 1998 Jul-Dec; v.46 1999 Jul-Dec; v.47 2000 Jan-Jun; v.47 2000 Jul-Dec; v.48 2001 Jan-Jun; v.48 2001 Jul-Dec; v.49 2002 Jan-Jun; v.49 2002 Jul-Dec; v.50 2003; v.52 2005 Jan; v.27(1980); v.28(1981); v.29(1982); v.30(1983)