Hosking, J. R. Aggregates for skid-resistant roads - Crowthorne, Berkshire : Transport and Road Research Laboratory, 1976 - 22, 8 p. - TRRL Laboratory report ; no. 693 . - Transport and Road Research Laboratory. TRRL Laboratory report ; no. 693 . Subjects--Topical Terms: Roads--SurfacesAggregates (Building materials)