ca.1967

1980s? 

#1987 (1st ed.?) 

#1992 (4th ed.) 

#1996 (1st ed.) 

#2000 

#2006 (3rd ed.) 

ca.2010 

#1998 

#2011

1970s 

1987 

1991

1995

ca.2000

#1982 

1989 

#1999 (3rd ed.) 

#2005 (4th ed.) 

#2008 (5th ed.) 

#2010 (6th ed.) 

1992 

ca.2000 

#1977/78 (9th ed.) 

#1980/81 (10th ed.) 

#1987 (11th ed.) 

#1994 (12th ed.) 

#2000 (13th ed.) 

#2004 (14th ed.) 

#2009 (15th ed.) 

2012