"Manpower/ Personnel." . . . . . . . . . "A national problem-solving system : highway safety researchers and decision makers : final report" . . "A national problem-solving system: highway safety researchers and decision makers"@en . . . . . . . . . . "Highway safety researches and Decsion makers"@en . "A National problem-solving system : Highway safety researchers and decision makers"@en . . . . . "A national problem-solving system: highway safety researchers and decision makers. Final report"@en . . . . . . "A national problem-solving system : highway safety researchers and decision makers" . . . . . . . . . "Automotive Safety/ Highway Safety/ Traffic Safety." . . "Administrative Planning." . . "Decision Making/ Planning." . . "Countermeasures Programs." . .