section 304(2)


304(2) Where a servant, in the course of his employment, sells a book, magazine, pamphlet or other thing, other than a newspaper, the employer shall be deemed not to publish any defamatory matter contained therein unless it is proved that the employer authorized the sale knowing that (a) defamatory matter was contained therein; or (b) defamatory matter was habitually contained therein, in the case of a periodical.