1
Published 1991
World Bank

2
Published 1991
World Bank

3
Published 1991
World Bank

4
Published 1991
World Bank

5
by Farvacque-Vitkovic, Catherine
Published 1992
World Bank

6
by Anderson, Jock R.
Published 1990
World Bank

7
Published 1999
OECD Publishing

8
Published 2001
OECD Publishing

9
Published 2009
OECD Publishing

10
Published 1993
World Bank

12
by Menke, Christoph
Published 1994
World Bank

14
by Chu, H. Quan
Published 1994
World Bank

15
by Lerman, Zvi
Published 1994
World Bank

16
by Hanna, Susan
Published 1995
Beijer International Institute of Ecological Economics and The World Bank

17
by Bacon, Robert
Published 1995
World Bank

18
by Pratt, David John
Published 1997
World Bank

19
by Stassen, Hubert E.
Published 1995
World Bank

20
by Foley, Gerald
Published 1995
The World Bank