1
Published 1993
2
Published 1981
3
4
by Sabri
Published 2004
5
6
by Ibn Khaldun, 1332-1406
Published 2005
7
by Wink
Published 1997
8
by محمود
Published 1984
9
by Needham
Published 1954
10
by Norris
Published 1993
11
by Hodgson
Published 1993
12
by Mortimer
Published 1994
13
by Davison
Published 1990
14
by Berkowitz
Published 1993
15
16
by Murray
Published 1990
17
18
Published 2009
19