GAO report on need for a third class: 'prove it'.
Department of Pharmaceutical Sciences, Wilkes University, Pa, USA.
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D011307:Drug Prescriptions / Q000145:classification*; D006077:Government Agencies; D006801:Humans; D007885:Legislation, Pharmacy / Q000639:trends; D004366:Nonprescription Drugs / Q000145:classification*; D010595:Pharmacists / Q000331:legislation & jurisprudence / Q000639:trends; D014481:United States
D004366:Nonprescription Drugs