1
Published 2008
2
by Barbier
Published 2005
3
4
by Adams, 1955-
Published 2009
5
by Elliott
Published 1994
6
Published 1993
7
by Adams
Published 1991
8
by Chandra
Published 1992
9
by Harrison
Published 1993
10
by Lipton
Published 1989
11
Published 1993
12
by Corbridge
Published 1993
13
14
Published 1992
15
16
by Mernissi
Published 1993
17
by Mernissi
Published 1993
18
Published 1983
19
by Coleridge
Published 1993
20
Published 1993