LEF - a magazine published by the LEF association in 1923-1925 under the editorship of V.V. Mayakovsky. Each issue consisted of five sections: 1) Program; 2) Practice; 3) Theory; 4) Book; 5) Facts. The main ideas of Lefov theorists were life-building, production art, and socially useful action. In total, seven issues of the magazine were published.