Materials evaluation.

v.1-5 1943-1947; v.6 1947; v.7-8 1948-1950; 1949-1952; v.11 1952-1953; v.12-13 1954-1955; v.14-15 1956-1957; v.16-17 1958-1959; v.17 no.2 1959; v.18-19 1960-1961; v.19; v.20-21 1962-1963; v.22 1964; v.23; v.23 1965; v.24; v.24 1966; v.25 1967; v.26; v.27; v.28; v.29; v.30; v.31; v.32; v.33; v.34; v.34 1976; v.35; v.36; v.37 no.1-8; v.37 no.9-13; v.38; v.38 1980; v.39; v.40 1982 Jan-Jun; v.40 1982 Jul-Dec; v.40 no.1-5; v.40 no.7-8,12-13; v.41 1983 Jan-Jun; v.41 1983 Jul-Dec; v.41 no.1-7; v.41 no.8-13; v.42 1984 Jan-Jun; v.42 1984 Jul-Dec; v.42 no.1-6; v.43 1985 Jan-Jun; v.43 1985 Jul-Dec; v.43 no.1-4,6-7; v.44 1986 Jan-Jun; v.44 1986 Jul-Dec; v.44 no.1-7; v.44 no.8-13; v.45 1987 Jan-Jun; v.45 1987 Jul-Dec; v.45 no.1-6; v.45 no.7-12; v.46 1988 Jan-Jun; v.46 1988 Jul-Dec; v.46 no.1-7; v.46 no.8-13; v.47 1989 Jan-Jun; v.47 1989 Jul-Dec; v.47 no.1-6; v.47 no.7-12 Incomplete; v.48 1990 Jan-Jun; v.48 1990 Jul-Dec; v.48 no.1-6; v.49 1991 Jan-Jun; v.49 1991 Jul-Dec; v.49 no.1-6; v.49 no.7-12; v.50 1992 Jan-Jun; v.50 1992 Jul-Dec; v.50 no.1-6; v.50 no.7-12; v.51 1993 Jan-Jun; v.51 1993 Jul-Dec; v.51 no.1,3-5; v.51 no.6; v.51 no.7-12; v.52 1994 Jan-Jun; v.52 1994 Jul-Dec; v.52 no.1,3-5,7-8,11-12; v.53 1995 Jan-Jun; v.53 1995 Jul-Dec; v.53 no.1,3-5; v.53 no.6; v.53 no.7-12; v.54 1996 Jan-Jun; v.54 1996 Jul-Dec; v.54 no.1-6; v.54 no.7-12; v.55 1997 Jan-Jul; v.55 1997 Aug-Dec; v.55 no.1,3-5; v.55 no.2; v.55 no.6; v.55 no.7-12; v.56 1998 Jan-Jun; v.56 1998 Jul-Dec; v.57 1999 Jan-Jun; v.57 1999 Jul-Dec; v.58 2000 Jan-Jun; v.58 2000 Jul-Dec; v.59 2001 Jan-Jun; v.59 2001 Jul-Dec; v.60 2002 Jan-Jun; v.60 2002 Jul-Dec; v.61 2003 Jan-Jun; v.61 2003 Jul-Dec; v.62 2004 Jan-Jun; v.62 2004 Jul-Dec; v.63 2005 Jan-Jun; v.63 2005 Jul-Dec; v.64 2006 Jan-Jun; v.64 2006 Jul-Dec; index v.1-11 1942-1953; v.48 no. 7-12 Index; v.42 no. 7-13 Index; v.43 no. 8-13 Index