The application of terrain evaluation to the Trans-African Highway Project = L'Évaluation du terrain appliquée au projet de route transafricaine /
Beaven, P. J.
Lawrance, C.
[Crowthorne :  Transport and Road Research Laboratory, 
1973]
Reprinted from P.I.A.R.C. Bulletin no. 206, 3rd Quarter, 1972.
Text in English and French.