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Traffic statistics of austrian federal highways
Interpreting results of a state-wide highway transport survey
Digest of Vermont highway transportation survey
Motor traffic on improved roads disproportionately high
New traffic flow recorder for use in traffic surveys
Traffic surveys valuable in planning and financing highway programs
Traffic count by boy scouts under auspices of engineering society
A survey of Liverpool's road-traffic requirements
History of determinations of the heights of mountains
Rochester traffic study proves importance of street cars
Highway traffic analysis methods and results
Basic highway data obtained for Cleveland regional area
Maryland aerial survey of highway traffic between Baltimore and Washington
Maryland aerial survey of highway traffic between Baltimore and Washington