1990 program survey.
D000401:Aircraft / Q000706:statistics & numerical data*; D003625:Data Collection; D004632:Emergency Medical Services; D004634:Emergency Medical Technicians / Q000706:statistics & numerical data; D004651:Employment / Q000706:statistics & numerical data*; D012456:Salaries and Fringe Benefits / Q000706:statistics & numerical data; D014481:United States; D000078329:Workforce