Here are entered works on the law of public notice. Works on the legal aspects of advertising in general are entered under [Advertising laws.] Works on the legal aspects of advertising a particular product or in connection with a particular activity or industry are entered under headings of the type [Advertising--[product, activity or industry]--Law and legislation,] e.g. [Advertising--Optical trade--Law and legislation.] Works on the advertising of legal services are entered under [Advertising--Lawyers.]