Oxford [u.a.]: Oxford University Press, 1998

Oxford [u.a.]: Oxford Univ. Press, 2006

Oxford [u.a.]: Oxford Univ. Press, 2000

Oxford [u.a.]: Oxford University Press, 1998

Cambridge [u.a.]: GeoInformation International, 1995

Oxford: Oxford University Press, 2015

Washington, D.C: The World Bank, 2018

Washington, D.C: The World Bank, 2018

Washington, D.C: The World Bank, 2018

World Bank, Washington, DC, 2018

World Bank, Washington, DC, 2018

SAGE Publications, 2005

SAGE Publications, 2003

SAGE Publications, 2003

SAGE Publications, 1996

Blackwell Science, 1997

Blackwell Science, 1996

Blackwell Science, 1996

SAGE Publications, 1994

Blackwell Scientific Publications, 1994