1
by Clutterbuck, Richard L.
Published 1967
2
by Kennedy, Malcolm
Published 1957
3
by Cornell, Richard
Published 1965
4
Published 2007
5
Published 1965
6
by Dutt, R. Palme
Published 1964
7
by Almond, Gabriel Abraham, 1911-
Published 1954
8
by Seton-Watson, Hugh, 1916-1984
Published 1953
9
by Hunt, R. N. Carew
Published 1950
10
by Zagoria, Donald S.
Published 1962
11
by Tanham, George K
Published 1961
12
by Truong Chinh
Published 1963
13
Published 1965
14
15
by Wolff, Robert Lee
Published 1956
16
17
18
by Bloodworth, Dennis.
Published 2011
19
by Townshend, Jules
Published 1996
20
Published 1982