Harms 1983, p. 125. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 126. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 128. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 133. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 136. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 130. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 132. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 134. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 131. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 135. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 137. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
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Harms 1983, p. 125. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 126. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 128. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 133. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 136. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 130. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 132. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 134. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 131. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 135. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320
Harms 1983, p. 137. Harms, Robert (1983), "The World Abir Made: The Maringa-Lopori Basin, 1885–1903", African Economic History (12): 122–139, doi:10.2307/3601320, JSTOR3601320