AYUBA, I. G. U. (2009). Essentials of population studies in urban and regional planning practice. Umahi Publishers.
Lua i Stíl Chicago (17ú heag.)AYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
Lua MLA (9ú heag.)AYUBA, Ijeoma Georgiana Umahi. Essentials of Population Studies in Urban and Regional Planning Practice. Umahi Publishers, 2009.
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