41
by Cleaver, Tony, 1947-
Published 1997
42
Published 1995
43
by Porter, Michael E.
Published 1990
44
by Ozcan, Gul Berna
Published 1995
45
by Tomasevski, Katarina
Published 1997
46
Published 1995
47
by Ray, S. K.
Published 1993
48
Published 1994
49
Published 1989
50
by Hettne, Bjorn
Published 1990
51
by Coates, David
Published 1994
52
by Reinicke, Wolfgang H.
Published 1996
53
Published 1992
54
Published 1994
55
56
by Simpson, E. S.
Published 1987
57
by Killick, Tony
Published 1990
58
by Fitzgerald, E. V. K, 1947-
Published 1989
59
by Koch, A. Robert
Published 1986
60
by Boserup, Ester
Published 1990