Vol. 4 No. 4 (2021): management and economics
Published:
2021-12-12
© 2022 Journal Port Science Research, All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Licensed under 
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
a Creative Commons Attribution 4.0 International License.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. 
a Creative Commons Attribution 4.0 International License.