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1991
RANDOM DRUG TESTING UNDER CONSTRAINTS ON SUBSAMPLE SIZES

Transportation Research Record, Issue 1322, p. 29-33

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1991
DIFFERENTIAL TRUCK ACCIDENT RATES FOR MICHIGAN

Transportation Research Record, Issue 1322, p. 62-69

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1991
INTEGRATION OF FIXED- AND FLEXIBLE-ROUTE BUS SYSTEMS

Transportation Research Record, Issue 1308, p. 51-57

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1991
DOWNTOWN SPACE FOR BUSES--THE MANHATTAN EXPERIENCE

Transportation Research Record, Issue 1308, p. 58-68

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1991
HIGHWAY DEICING: COMPARING SALT AND CALCIUM MAGNESIUM ACETATE

Transportation Research Board Special Report, Issue 235, 180 p.

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1991
1991
INFORMATION TECHNOLOGY AT THE STATE DEPARTMENT OF TRANSPORTATIONS

Proceedings of the 1991 Geographic Information Systems (GIS) for Transportation Symposium, p. 365-369

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1991
1991
LARGE VEHICLE SAFETY: TRANSIT AND TRUCKS 1991

Transportation Research Record, Issue 1322, 75 p.

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1991
EFFECTS OF ENFORCEMENT ON SEAT BELT USE IN HAWAII

Transportation Research Record, Issue 1325, p. 51-56

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1991
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