1
by Dowsing, Roy
Published 2000
2
by Stallings, William.
Published 1996
3
Published 1982
4
by Barbacci, Mario R.
Published 1982
5
by Avtar Singh,, 1947-.
Published 1991
6
by Wakerly, John F.
Published 1981
7
by McDowell, Steven.
Published 1999
8
by Meyer, Theodore H., 1926-
Published 1982