1625 Feb 24 1990 connectives.ms 1977 Feb 24 1990 connectives.hlp 1531 Feb 24 1990 formulae.hlp 2405 Feb 24 1990 logic.ms 1256 Feb 24 1990 output.ms 1284 Feb 24 1990 axioms.ms 1544 Feb 24 1990 axioms.hlp 3247 Feb 24 1990 intro.ms 1676 Feb 24 1990 output.hlp 1225 Feb 24 1990 formulae.ms 3285 Feb 24 1990 logic.hlp 3966 Feb 24 1990 intro.hlp .