المؤلفون: Akpakpan, Edet B.

المصدر: Development and Change ; volume 17, issue 4, page 659-676 ; ISSN 0012-155X 1467-7660

الاتاحة: http://dx.doi.org/10.1111/j.1467-7660.1986.tb00258.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1467-7660.1986.tb00258.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1467-7660.1986.tb00258.x