1
by Rothgeb, John M.
Published 1993
2
by Stoessinger, John G.
Published 1965
3
Published 1992
4
Published 1998
5
by Pathmanathan, Murugesu.
Published 1985
6
by Nixon, Richard M, 1913-
Published 1984
7
Published 2012
8
by Bull, Hedley, 1932-1985
Published 1977
9
by Mathisen, Trygve
Published 1971
10
Published 2007
11
Published 1995
12
by Mingst, Karen A.
Published 2011
13
by Pearson, Frederic S.
Published 1992
14
by Holsti, K.J, 1935-
Published 1992
15
by Rosenau, James N.
Published 2006
16
17
by Murugesu Pathmanathan
Published 1985
18
by Roskin, Michael G.
Published 1993
19
by Walker, R. B. J.
Published 1993
20
by Scholte, Jan Aart
Published 1993