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