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  ORN6 A guide to geometric design

  1988
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  Application of HDM technology and international good practice in improving long term maintenance planning in Tanzania

  2002
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  Maintenance of unpaved roads in wet climates. Fifth International Conference on Low Volume Roads, Raleigh, North Carolina 19-23 May 1991

  1991
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  A method for the appraisal of low volume roads in Tanzania. 22nd World Road Congress (PIARC), Durban, South Africa, 19 – 25 October 2003

  2001
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