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Keywords:
ROAD RESEARCH LABORATORY,
RRL,
CONSTRUCTION,
AIRPORTS,
AIRFIELDS,
ROUTES,
TRANSPORT,
PAVEMENTS,
FLEXIBLE,
DESIGN,
DRAINAGE,
SOILS,
SURVEYS,
EARTHWORKS,
CBR,
RATIOS,
TESTS,
SPEED,
BEARING,
MOISTURE,
CALIFORNIA,
JOHANNESBURG,
JAN SMUTS AIRP.,
SOUTH AFRICA
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© Thomas Telford and ICE
1948
