National environmental health planning at the crossroads.
D004782:Environmental Health; D006040:Goals; D006285:Health Planning / Q000331:legislation & jurisprudence; D006287:Health Planning Guidelines; D006308:Health Systems Plans / Q000331:legislation & jurisprudence*; D006801:Humans; D012040:Regional Health Planning / Q000331:legislation & jurisprudence*; D014481:United States