41
42
by Gordon
Published 1969
43
by Buss
Published 1964
44
by Allen
Published 1976
45
Published 1993
46
by Brown
Published 2003
47
Published 2006
48
Published 2001
49
Published 2002
50
by Sasha Bashir 1980-
Published 2009
51
by Ziegler, Oswald Leopold
Published 1972
52
Published 2010
53
Published 2000
54
55