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https://library.vaa.edu.vn/thu-vien-so/transport-curiosities-1850-1950-weird-and-wonderful-ways-of-travelling-by-road-rail-air-and-sea 2026-05-22T19:18:39.967Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/annex-19-safety-management-first-edition 2026-05-20T03:47:15.132Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/annex-14-aerodromes-volume-ii-heliports-third-edition 2026-05-20T04:42:01.722Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/annex-13-aircraft-accident-and-incident-investigation-tenth-edition 2026-05-20T04:42:04.591Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/annex-4-aeronautical-charts-eleventh-edition 2026-05-23T15:25:37.848Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/annex-16-environmental-protection-volume-ii-aircraft-engine-emissions-third-edition 2026-05-20T07:42:39.886Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/giao-trinh-kinh-te-du-lich 2026-05-20T18:08:13.170Z weekly 0.8 https://library.vaa.edu.vn/thu-vien-so/he-thong-vien-thong-tap-1 2026-05-22T10:25:30.713Z weekly 0.8