1
by Aho, Alfred V.
Published 1977
2
Published 1994
3
Published 2014
4
5
by Carver, D.K.
Published 1979
6
Published 1992
7
8
by Wittering, W. O.
Published 1974
9
by Radford, Arthur S.
Published 1975
10
Published 1977
11
12
13
by Bowman, J. H.
Published 2005
14
15
16
by Clarke, Geoffrey, M.
Published 1969
17
by Ash, Russell
Published 2005
18
19
Published 1980
20
by Townsend, Carl
Published 1986