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1
by Yigitcanlar, Tan
Published 2022
MDPI - Multidisciplinary Digital Publishing Institute
Subjects: “...Spain...”
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2
by Rodrigo-Comino, Jesús
Published 2020
MDPI - Multidisciplinary Digital Publishing Institute
“... different parts of the world such as Ethiopia, Morocco, China, Iran, Italy, Portugal, Greece, and Spain...”