1
by Meserve
Published 2008
2
by Bridge
Published 1983
3
4
5
Published 1977
6
Published 1974
7
by Itzkowitz
Published 1972
8
9
by Ozcan
Published 1997
10
11
by Cunningham
Published 1993
12
by Fuller
Published 1993
13
Published 1992
14
by Dodd
Published 1990
15
by Imber
Published 1990
16
by Maksudoglu
Published 1999
17
Published 1990
18
19
20
by Childs
Published 1990