?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=+G%C3%A1l+J%C3%B3zsef&rft.aulast=G%C3%A1l&rft.aufirst=J%C3%B3zsef&rft.isbn=978-963-306-928-8&rft.title=A+Covid-19+hat%C3%A1sa+a+glob%C3%A1lis+logisztikai+folyamatokra+%3A+%5Babsztrakt%5D&rft.date=2023&rft.genre=proceeding