41
by Fennessy, R. R.
Published 1963
42
Published 1970
43
by Polsby, Nelson W
Published 1980
44
Published 1979
45
by Needham, Douglas
Published 1983
46
by Chin, Yoong Kheong
Published 1994
47
by Kissinger, Henry, 1923-
Published 1979
48
by Van Creveld, Martin L.
Published 1993
49
Published 1994
50
by Kent, Glenn A, 1915-
Published 1984
51
by Mohamed Yusoff Ismail.
Published 1993
52
by Wilkinson, Paul, 1937-
Published 1974
53
by Harris, Peter Bernard
Published 1975
54
Published 1991
55
Published 1978
56
57
Published 2002
58
by Harrod, Roy, Sir, 1900-
Published 1965
59
Published 1996
60
Published 1998