21
Published 2009
22
Published 1984
23
Published 1993
24
by Lasater, Martin L.
Published 1994
25
Published 1991
26
by Yong, Mun Cheong
Published 2003
27
by Faust, John R., 1930-
Published 1995
28
29
by Feste, Karen A.
Published 2003
30
by Abegunrin, Olayiwola
Published 2003
31
32
Published 2008
33
by Chari, P. R.
Published 2003
34
35
by Nederveen Pieterse, Jan
Published 2004
36
by Feffer, John
Published 2003
37
by Noyes, James H.
Published 1982
38
by Shahid M. Amin
Published 2001
39
Published 1993
40
by Sutter, Robert G.
Published 1996