1
Published 1986
2
Published 1980
3
Published 1986
4
5
Published 1989
6
Published 1978
7
by Bergamini, David
Published 1980
8
Published 1979
9
by Mark, Herman F.
Published 1981
10
Published 1989
11
by Carr, Archie Fairly.
Published 1980
12
Published 1986
13
Published 1986
14
by Owen, Wilfred.
Published 1981
15
Published 1987
16
Published 1979
17
by Engel, Leonard.
Published 1980
18
Published 1987
19
by Furnas, C.C
Published 1981
20
by Lee, Russel V.
Published 1981