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 2006
9
Published 1992
10
11
by Weekly, James K.
Published 1987
12
by Meier, Gerald M.
Published 1968
13
by Isaak, Robert A.
Published 1991
14
Published 2006
15
by Corden, W. M. (Warnex Max)
Published 1992
16
17
by Khor, Martin
Published 2000
18
by Obminsky, Ernest
Published 1988
19
by Williams, Marc
Published 1994
20
by Krugman, Paul R.
Published 2005