In this article I will analyze the Encyclopaedia seen as a manifestation of Gustian School's domination within the scientific and cultural field of the interwar period. Given the type of power strategy used by D. Gusti and by monographists, as well as the context, this dominance has not morphed, however, in a cultural hegemony, meaning that it has not structured the intellectual world, nor has generated major narratives of interwar's Romania. I will also show the key role played by Mircea Vulcənescu in ensuring full control on the writing of Encyclopaedia's volumes by the Gustian School in coordinating the 3rd and 4th volumes dedicated to the national economy and, last but not least, his role in the development of important studies in the economy of the cultural challenges pursued by the monographists.