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References
Hilger, M. Inez (Mary Inez). A Social Study of One Hundred Fifty Chippewa Indian Families of the White Earth Reservation of Minnesota. The Catholic University of America Press, 1939, pp 152. ehraf link
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Robbins, Michael C., and Philip L. Kilbride. “Microtechnology in Rural Buganda.” Technology and Social Change, Waveland Press, 1987, pp. 244–67, pp 260. ehraf link