title: Diamond Shamrock Corporation: influencing the 'need to know'.
mesh_terms: D003201:Computers; D005568:Forms and Records Control / Q000379:methods*; D006801:Humans; D009784:Occupational Diseases / Q000453:epidemiology; D009787:Occupational Medicine; D009817:Office Management / Q000379:methods*; D014481:United States