Contains the following standards: IEEE 32-1972, C62.1-1989, C62.2-1987, C62.11-1987, C62.22-1991, C62.23-1994, C62.31-1987, C62.32-1981, C62.33-1982, C62.35-1987, C62.36-1994, C62.38-1994, C62.41-1991, C62.42-1992, C62.47-1992, C62.92.1-1987, C62.92.2-1989, C62.92.3-1993, C62.92.4-1991, C62.92.5-1992.