21
by Mittelman, James H.
Published 1997
22
by Coker, Christopher, 1953-
Published 1984
23
by Wallace, Don, 1932-
Published 1976
24
by Knorr, Klaus, 1911-
Published 1973
25
Published 1994
26
by Blake, David H.,
Published 1983
27
by Navarro, Peter
Published 2007
28
by Rodrik, Dani
Published 1999
29
by Ovenden, Keith
Published 1989
30
by Sewell, John W.
Published 1980
31
by Wriggins, W. Howard, 1918-
Published 1978
32
by Lodge, George C.
Published 1995
33
by Gill, Stephen, 1950 -
Published 1988
34
Published 1995
35
by Fawcett, J. E. S, 1913-
Published 1977
36
by Catley, Bob
Published 1996
37
Published 1978
38
by Pirages, Dennis
Published 1978
39
Published 2002
40
by Frey, Bruno S.
Published 1984