AYUBA, I. G. U. (2009). Essentials of population studies in urban and regional planning practice. Umahi Publishers.
Chicago-referens (17:e uppl.)AYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
MLA-referens (9:e uppl.)AYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
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