Us vs. them: the minefield of comparative ads.
D000329:Advertising / Q000331:legislation & jurisprudence*; D004465:Economic Competition / Q000331:legislation & jurisprudence*; D004467:Economics / Q000331:legislation & jurisprudence*; D005607:Fraud / Q000331:legislation & jurisprudence; D007221:Industry; D007603:Jurisprudence; D014481:United States