title: Results of the drug testing program at Southern Pacific Railroad.
authors.affiliation: Southern Pacific Transportation Company, San Francisco, CA 94105.
authors.forename: R W
authors.initials: RW
authors.lastname: Taggart
mesh_terms: D006801:Humans; D009786:Occupational Health Services; D011890:Railroads; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000534:rehabilitation; D013997:Time Factors; D014481:United States