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3 possible itineraries are presented here for the query you made.

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This demo example describes part of the Lang & Chapin Congo expedition : from their arrival in Boma to their camp in Faradje. The three possibilities differ in the Medje/Gamangui/Bafwabaka area (roughly 27.5E 2N). Medje and Bafwabaka are two well-known camp sites of the Lang & Chapin journey. Gamangui, in between those two, is added to simulate a specimen collecting place. Thus, there is room for different interpretations. The sections 11,12,13 (in possibility 1) or 111,112,113 (in possibility 2) or 211,212,213 (in possibility 3) depict three possible ways to fit the Gamangui specimens in the Lang & Chapin journey.

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