Delivering essential health care services in rural areas : an analysis of alternative models /

"May 1991."

Development of an upgrading plan for highway safety simulation models. Volume II: executive summary.

Turner-Fairbank Highway Research Center, McLean, Va.

Development of an upgrading plan for highway safety simulation models. Volume I: final report.

Turner-Fairbank Highway Research Center, McLean, Va.

Special analytic study of methods for estuarine water resources planning.

Mode of access: Internet.

Economic models of migration : review of the literature and some new evidence /

ASPER/PUR-76/3410/A

Guidelines for air quality maintenance planning and analysis.

Vol. 7: second ed., 1975.