Sani, A.B. 2019. “The British and the Trans-Saharan trade”: The Colonial State Policies in Undermining the Trans-Saharan trade in Hausa Land (Northern Nigeria), 1890s–1920s. Vestnik of Saint Petersburg University. Asian and African Studies. 11, 1 (Mar. 2019), 75–88. DOI:https://doi.org/10.21638/spbu13.2019.106.