Materials performance.

v.13 1974; v.13 no.1-6; v.13 no.7-12; v.14 1975; v.14 no.1-6; v.14 no.7-12; v.15 1976; v.15 no.1-6; v.15 no.7-12; v.16 1977; v.16 no.1-6; v.16 no.7-12; v.17 1978; v.17 no.1-6; v.17 no.7-12; v.18 no.1-6; v.18 no.7-12; v.19 1980; v.19 no.1-6; v.19 no.7-12; v.20 1981 Jan-Jun; v.20 1981 Jul-Dec; v.20 no.1-6; v.20 no.7,8,10,12; v.21 1982 Jan-Jun; v.21 1982 Jul-Dec; v.21 no.1-6; v.21 no.7-12; v.22 1983 Jan-Jun; v.22 1983 Jul; v.22 1983 Jul-Dec; v.22 no.1-6; v.23 1984 Jan-Jun; v.23 1984 Jul-Dec; v.23 no.1-6; v.23 no.7-12 July-Dec. 1984; v.24 1985 Jan-Jun; v.24 1985 Jul-Dec; v.24 no.1-6; v.24 no.7-12 July-Dec. 1985; v.25 1986 Jan-Jun; v.25 1986 Jul-Dec; v.25 no.1-6; v.26 1987 Jul-Dec; v.26 1987 Jan-Jun; v.26 no.1-6; v.27 1988 Jan-Jun; v.27 1988 Jul-Dec; v.27 no.1-6; v.28 1989 Jul-Dec; v.28 1989 Jan-Jun; v.28 no.2-6; v.28 no.7-12; v.29 1990 Jan-Jun; v.29 1990 Jul-Dec; v.29 no.1-6; v.30 1991 Jan-Jun; v.30 1991 Jul-Dec; v.30 no.1-6; v.30 no.7-12; v.31 1992 Jan-Jun; v.31 1992 Jul-Dec; v.31 no.1-6; v.31 no.7-12; v.32 1993 Jan-Jun; v.32 1993 Jul-Dec; v.32 no.1-6; v.32 no.7-12; v.33 1994 Jan-Jun; v.33 1994 Jul-Dec; v.33 no.1-6; v.33 no.7-12; v.34 1995 Jan-Jun; v.34 1995 Jul-Dec; v.34 no.1-6; v.35 1996 Jan-Jun; v.35 1996 Jul-Dec; v.35 no.1-6; v.35 no.7-10; v.36 1997; v.36 1997 Jan-Jun; v.36 1997 Jul-Dec; v.36 no.1-6; v.36 no.7-12; v.37 1998 Jan-May; v.37 1998 Jul-Dec; v.38 1999 Jan-Jun; v.38 1999 Jul-Dec; v.38 no.7-12 1999 July-Dec.; v.39 2000 Jan-Jun; v.39 2000 Jul-Dec; v.40 2001 Jan-Jun; v.40 2001 Jul-Dec; v.40 no.3-6 2001; v.41 2002 Jan-Jun; v.41 2002 Jul-Dec; v.42 2003 Jan-Jun; v.42 2003 Jul-Dec; v.43 2004 Jan-Jun; v.43 2004 Jul-Dec; v.44 2005 Jan-Jun; v.44 2005 Jul-Dec; v.45 2006 Jan-Jun; v.45 2006 Jul-Dec; Suppl.; v.27 no. 7-12 Index; v.29 no. 7-12 Index; v.24 no. 7-12 Index; v.25 no. 7-12 Index; v.22 no. 7-12 Index; v.23 no. 7-12 Index; v.26 no. 7-12 Index