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APA Citation
Nedkov, S., Zhelezov, G., Ilieva, N., Nikolova, M., Koulov, B., Naydenov, K., & Dimitrov, S. (Eds.) (2020). Smart geography : 100 years of the Bulgarian Geographical Society. Cham : Springer. http://access.bl.uk/ark:/81055/vdc_100089848477.0x000001