Subject directory of special libraries and information centers.

v.1; v.2; v.3; v.4; v.5; v.5 1974; 1st ed.,v.4 1975; 1977 v.1; 1977 v.2; 1977 v.3; 1977 v.4; 1977 v.5; v.5 1977; 1979 v.3; 1981 v.1; v.1 1981; 1981 v.2; v.2 1981; 1981 v.3; v.3 1981; 1981 v.4; v.4 1981; 1981 v.5; v.5 1981; 6th ed.,v.2 1981; 7th ed.,v.1 1982; 7th ed.,v.3 1982; 1985 v.3; 1987 v.3; 1988 v.3; 1989 v.3; v.4 1989; 1990 v.3; 1991 v.3; 1992 v.1; 1992 v.2; v.2 1992; 1992 v.3; v.3 1992; 1993 v.3; 1994-1997; 1997 v.3; 1998-1999; 2000 v.3; 2001 v.3; 2002 v.3; 2004 v.3; 2007 v.3