Clean-up Of The Singapore River: Before And After
In March 1969, Prime Minister Lee called on the drainage engineers in the Public Works Department and water engineers in the Public Utility Board to work together on a plan to solve the environmental problems associated with the rivers of Singapore, as we wrote in “Cleaning of the Singapore River and Kallang Basin in Singapore” for International Journal of Water Resources Development.
https://lkyspp.nus.edu.sg/gia/articl...fore-and-after
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