Evaluation of commercially available laser protective eyeware /

Mode of access: Internet.

Evaluation of occupational hazards from industrial radiation : a survey of selected states /

"NIOSH technical information."

Safety evaluation of renovated wastewater from a poultry processing plant /

"Grant nos. R804286 & S803325."

Effects of enforcement on speeds of motorists, 11th Street, Springfield, Illinois /

On cover: Illinois traffic safety programs, report of evaluation or assessment.

Some effects of hearing impairment upon school performance /

Cover title: The relationship of hearing to learning; some effects of hearing impairment upon school performance.

Recent changes in earnings distributions in the U. S. : age and cohort effects /

"Draft, April 1999."

A time series analysis of the growth and determinants of union/nonunion relative wage effects, 1967-1977 /

"April 1981."

Effects of unemployment insurance entitlement on duration and job search outcome /

Cover title.

Bias in the estimates of treatment effects in quasi-experimental evaluations /

Bibliography: leaves 16-17.