1
Published 1922
2
by Handscombe, Richard S.
Published 1989
3
Published 2008
4
by Vallabhaneni, S. Rao
Published 2008
5
Published 1981
6
7
Published 1991
8
9
Published 1987
10
11
12
by Bell, Robert R.
Published 1991
13
by Lessem
Published 1990
14
by Webber, Ross A.
Published 1991
15
by Radzik, Adam
Published 1990
16
by Hellriegel, Don
Published 1989
17
by Hay, Michael
Published 1991
18
by Carnall, Colin A.
Published 1990
19
by Woods, Mike
Published 1989
20
by Yukl, Gary A.
Published 1990