http://dewey.info/scheme/a14/ en
362.109 Historical, geographic, persons treatment
362.109173 Socioeconomic regions by concentration of population
http://dewey.info/scheme/a14/ vi
362.109 Lịch sử, địa lý, con người
362.109173 Nghiên cứu khu vực kinh tế xã hội theo mật độ dân số
http://dewey.info/scheme/a14/ it
362.109 Storia, geografia, persone
362.109173 Regioni socioeconomiche secondo la densità della popolazione
Dewey Decimal Classification
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