Rethinking the "Urban Sociology". Part three: research Methodology in a socio-territorial approach (the basic components) - In this third part some steps of empirical research are considered. A particular attention is given to what we call "first analysis plan", in which all the requalifying elements are located, including the morphological, economic and urban planning ones. Moreover, some further concepts are introduced: the "structured territorial context" (the research place), the "theme-based area" (the constitutional factors of structure), and the "interstitial analysis" (every element which implies change). Then, some methodological steps are mentioned in relation to quantitative data analysis.
Key words: base territorial factors, concept crashing, survey files, perceived structure, re-qualifying cognitive surplus.