The contribution focuses on the internal process of the academic formation and establishment of vocational and business education (VET) as a science or as partial disciplines of educational science in the 20th century. Starting with theories of science (e.g. Stichweh, 2013; Clark 1972) in consideration of the establishment thesis of Reinisch (2009; 2010) and the generation thesis of Zabeck (2006) the study would like to contribute to a deeper understanding of the formation and establishment of VET as a science in the German-speaking area. For this purpose the VET professors of the German-speaking area in the 20th Century, as well as their generational relations (in this contribution initially employment and qualification relations) are considered. The methodological access is achieved through a collective biographical quantitative approach based on a separate SQL database by means of network analysis and visualisations via Gephi.