Jones, T. E.
A study of the cost-effectiveness of grading unpaved roads in developing countries/ by T.E. Jones and R. Robinson. - Crowthorne, Birks. : Transport and Road Research Laboratory, 1986. - 11 p. - Research report/ no.91 . - Research report (Transport and Road Research Laboratory ; 91. .
10250061
Roads--Design and construction--Developing countries.
A study of the cost-effectiveness of grading unpaved roads in developing countries/ by T.E. Jones and R. Robinson. - Crowthorne, Birks. : Transport and Road Research Laboratory, 1986. - 11 p. - Research report/ no.91 . - Research report (Transport and Road Research Laboratory ; 91. .
10250061
Roads--Design and construction--Developing countries.