1
by Krugman, Paul R.
Published 1997
2
by Heffernan, Shelagh A, 1956-
Published 1990
3
by Hout wil
Published 1993
4
by Palan, Ronen
Published 1996
5
Published 1995
6
7
by Cowling, Keith
Published 1994
8
Published 1995
9
Published 1997
10
by Loehr, William
Published 1983
11
by Shchetinin, Valentin
Published 1989
12
Published 1990
13
14
Published 1991
15
by Pirages, Dennis
Published 1978
16
Published 1994
17
by Wiener, Jarrod
Published 1995
18
by Johnson, Hazel
Published 1991
19
Published 1990
20
by Heal, G. M.
Published 1991