Report on a national study of Preliminary Breath Test (PBT) and Illegal Per Se laws; effectiveness of PBT and IPS laws. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Full road closure for work zone operations : a cross-cutting study : reducing congestion and crashes through full road closure for maintenance and construction.

"EDL# 13795."

National study of hospitalized pesticide poisonings, 1974-1976 /

Mode of access: Internet.

Intake, the discriminant function : a report on the national study on social services for children and their families /

Issued Apr. 1980.

Strengthening the research base for extension programs : executive summary : a national study of attitudes and perceptions /

"March 1985."

National Study of Social Welfare and Rehabilitation Workers, Work, and Organizational Contexts; Working Papers

Mode of access: Internet.