1
Published 1972
2
Published 1952
3
by Brodie, Bernard, 1910-
Published 1974
4
Published 1957
5
by Beloff, Max, 1913-
Published 1955
6
by Holsti, K. J, 1935-
Published 1972
7
by Haskins, Caryl P.
Published 1964
8
by Burns, Alan, Sir, 1887-
Published 1957
9
by Liska, George
Published 1968
10
11
by Burton, John W, 1915-
Published 1962
12
by Satow, Ernest Mason, 1843-1929
Published 1979
13
by Burton, J. W.
Published 1968
14
by Padelford, Norman J, 1903-
Published 1954
15
16
Published 1970
17
by Aron, Raymond
Published 1962
18
by Haas, Ernst B.
Published 1956
19
by Jacob, Philip E.
Published 1965
20
by Carleton, William Graves
Published 1957