Developing world water / editor by John Pickford
Grosvenor Press International, 1987
Buku Teks
Developing world water
Grosvenor Press, 1986
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Developing world water : essential reading for the water industry worldwide containing over 70 features and 250 illustrations
Grosvenor Press International, T.t.
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World development report 1992: development and the environment
World Bank
Oxford University Press, 1992
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Annual report 1999 : The OPEC fund for International development
The OPEC Fund for International Development, 2000
Buku Teks