1
by Carbaugh, Robert J, 1946-
Published 1985
2
by Meerhaeghe, M. A. G. Van
Published 1971
3
by Jalee, Pierre.
Published 1968
4
Published 2003
5
by Noreng, Oystein, 1942-
Published 1978
6
7
by Sethi, J.D, 1924-
Published 1990
8
Published 1992
9
10
by Meier, Gerald M.
Published 1968
11
by Isaak, Robert A.
Published 1991
12
Published 2006
13
by Corden, W. M. (Warnex Max)
Published 1992
14
15
by Obminsky, Ernest
Published 1988
16
by Williams, Marc
Published 1994
17
by Krugman, Paul R.
Published 2005
18
by Hodgson, John S.
Published 1983
19
by Husted, Steven L.
Published 2007
20
by Marsh, Steve, 1967-
Published 2005