N A Parker

发表

ESSENTIALS OF HIGHWAY ENGINEERING :(LOW COST ED. )

F J Gichaga, N A Parker, 1988 .

EVALUATION OF THE PERFORMANCE OF PERMANENT PAVEMENT MARKINGS AND RETRO REFLECTORS IN SNOWPLOWABLE RAISED PAVEMENT MARKERS

N A Parker, 2002 .

IMPLEMENTATION OF MAINTENANCE MANAGEMENT SYSTEMS ---PRE CONFERENCE PROCEEDINGS 3RD IRF MIDDLE EAST REGIONAL MEETING. TOWARDS BETTER ROAD PERFORMANCE, RIYADH, SAUDI ARABIA, 13-18 FEBRUARY 1988. 6 VOLUMES.

N A Parker, 1988 .