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1
by Verhoef, Leendert
Published 2020
MDPI - Multidisciplinary Digital Publishing Institute
Subjects: “...air travel...”
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2
by Tchounwou, Paul B.
Published 2020
MDPI - Multidisciplinary Digital Publishing Institute
Subjects: “...activity-travel patterns...”
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3
Published 2019
OECD Publishing
“... need to travel to meet SDG targets for which data is currently available. This 2019 edition...”
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4
Published 2022
OECD Publishing
“... to travel to meet SDG targets for which data is currently available, but it goes one step further...”