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1Academic Journal
المؤلفون: Amila JAYASINGHE, Chethika ABENAYAKE, L. D. C. H. N. KALPANA
المصدر: Journal of the Eastern Asia Society for Transportation Studies. 2019, 13:1062
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2
المصدر: Bhumi, The Planning Research Journal. 8:31
مصطلحات موضوعية: General Earth and Planetary Sciences, General Environmental Science