The United States TTPI
From Habele Institute
Coulter, John Wesley (October 1948). "The United States TTPI". Journal of Geography. 47 (7): 253–267. doi:10.1080/00221344808987096. ISSN 1752-6868 0022-1341, 1752-6868 Check |issn= value (help).
Extra details:
CorpusID: 128618702 MAG: 1970094331 OpenAlex: W1970094331
