The paper investigates the evolution of marketing science within the period 1920-1930. It is a continuation of author's previous research projects devoted on the genesis of marketing as a scientific discipline (1900-1910) as well as the scientific development of marketing within the period 111 Резюмета 1910-1920. The research goal of the present study is to perform an analysis of development of marketing theory within the period 1920-1930 and to outline the major tendencies and inherent…