TY - SER ED - Transport and Road Research Laboratory. TI - TRRL report U1 - 41979 PY - 1972///- CY - Crowthorne, Berkshire PB - Transport and Road Research Laboratory, Dept. of the Environment KW - Highway engineering KW - Road materials KW - Roads KW - Design and construction N1 - 0; 0; 0; 41979_000000000000000_WAT N2 - Includes addenda to some nos. of the earlier title ER -