21
by Herring, Eric
Published 1995
22
by Klein, Bradley S.
Published 1994
23
Published 1995
24
by Metzler, John J.
Published 2001
25
Published 1994
26
by Middleton, Drew, 1913-
Published 1975
27
Published 1964
28
29
by Holbraad, Carsten
Published 1979
30
by Brooks, Stephen G.
Published 2008
31
by Lukic, Reneo
Published 1996
32
Published 2002
33
Published 1996
34
Published 1981
35
Published 1964
36
Published 1995
37
by Berridge, G. R.
Published 1987
38
by Koh, Tommy
Published 1998
39
by Ulam, Adam B, 1922-
Published 1983
40
by Gilbert, Felix, 1905-
Published 1970