1
by Sloan, Karlin, 1969-
Published 2006
2
by Shea, Gordon F, 1925-
Published 2002
3
by Fuller, George
Published 1994
4
5
6
7
by Valentine, Charles F.
Published 1991
8
Published 2004
9
by Hoyle, David
Published 1996
10
by Sloman, Martyn
Published 1994
11
by Fuller, George
Published 1991
12
Published 1987
13
by Yale, David R.
Published 1991
14
15
by Buzan, Tony
Published 2004
16
by Gilgrist, David
Published 1996
17
by Bailey, Edward P.
Published 1999
18
by Cone, Robert J.
Published 1991
19
by Flanagan, Neil
Published 1998
20
by Stott, Kenneth
Published 1995