International audienceWhile the Paris Diderot University was created (1971) around an interdisciplinary project, this article proposes to study the relationship between geography and spatial planning within geography studies. The methodology is based on archival work at the national level (as part of a doctoral research) to characterize the evolution of French universities and for the case of Paris Diderot courses it is based on a series of interviews and an archival work from the presentation documents of the degrees and courses. The results are organized around a chronological approach. In the 1970s, the spatial planning is an application of geography while it has a certain epistemological crisis. Then in the 1980s, spatial planning becam...