1
by Morris, J. H. C.
Published 1968
2
by Harris, David.
Published 2010
3
by Henkin, Louis
Published 1987
4
Published 1992
5
by Carter, Barry E.
Published 1994
6
7
by Green, L. C.
Published 1959
8
by Holder, W. E
Published 1972
9
by Steinerte, Elina.
Published 2008
10
Published 1952
11
Published 1948
12
13
by Mann, F. A, 1907-
Published 1992
14
by Orfield, Lester B.
Published 1956
15
Published 1967
16
by Harris, D. J.
Published 1991
17
by Dixon, Martin
Published 1991
18
19
by Kommers, Donald P.
Published 1989
20
by Sweeney, Joseph Modeste
Published 1988