Jurnal Penelitian: Announcements https://ejournal.poltekbangsby.ac.id/index.php/jurnalpenelitian Jurnal Penelitian Politeknik Penerbangan Surabaya en-US Tue, 29 Aug 2023 13:45:30 +0000 OJS 3.2.1.1 http://blogs.law.harvard.edu/tech/rss 60