a hand holding brochure from a Soviet Union propaganda poster. Re-colored for more general purpose uses. Works published by the Union of the Soviet Socialist Republics before 27 May 1973 were not protected by International Copyright Conventions and are thus in the public domain.<br/>手拿著小冊子<br/>brochure、hand、pamphlet<br/>小冊、手、小冊子<br/>資料來源：openclipart ( https://openclipart.org/ )