1
Published 1993
2
Published 1990
3
Published 1985
4
by Schmidt, Samuel.
Published 1991
5
Published 1991
6
Published 1992
7
by Burns, E. Bradford
Published 1994
8
9
by Graham, Richard, 1934-
Published 1994
10
Published 1989
11
by Wiarda, Howard J, 1939-
Published 1990
12
Published 1990
13
by Parkinson, F.
Published 1974
14
by Davis, Harold Eugene, 1902-
Published 1975
15
Published 1983
16
17
by Kryzanek, Michael J.
Published 1990
18
by Molineu, Harold
Published 1990
19
by Petras, James F, 1937-
Published 1990
20
by Carothers, Tom H.
Published 1991